- stunnel-users - stunnel.org

Stunnel | connection reset by peer
by Prem Vikash Upadhyay 27 Jun '13

27 Jun '13

Hi, Is there any configuration that can be used, to change the 'connection reset by peer' to 'connection refused'?. In our setup we are using day cq dispatcher with sticky session enabled, but dispatcher is invalidating sticky session only when it receiving error as 'connection refused', while stunnel is always sending error as 'connection reset by peer', whenever the connect server is down/crashed. Thanks Prem

2 1

Sending Email from PLC Without Authentication with gmail
by Stephen Gates 27 Jun '13

27 Jun '13

A customer needs to send emails from a Programmable Logic Controller (PLC) which cannot provide authentication. The customer's email server is gmail which obviously requires authentication. The PLC IP is 192.168.1.2 and the PC IP on which stunnel is installed is 192.168.1.31 My config is: cert = stunnel.pem [smtps] client = yes accept = 25 connect = smtp.gmail.com:465 The PLC is set up to send emails to the IP of the PC 192.168.1.31 When I try to send emails I get the following in the stunnel log: 2013.06.26 14:26:30 LOG5[12384:13048]: Service [smtps] accepted connection from 192.168.1.2:2938 2013.06.26 14:26:30 LOG5[12384:13048]: connect_blocking: connected 74.125.130.108:465 2013.06.26 14:26:30 LOG5[12384:13048]: Service [smtps] connected remote server from 192.168.1.31:53599 Any help would be greatly appreciated! Stephen Gates Harold K. Scholz Company 7800 Serum Avenue Ralston, NE 68127 402-339-7600

2 1

Re: [stunnel-users] Sending Email from PLC Without Authentication - With debug = 7 log
by Stephen Gates 26 Jun '13

26 Jun '13

Just wanted to send this again with a clarified subject. Still getting the connect_blocking error. Any more ideas? Thanks for replying, Brian. From: Stephen Gates [mailto:[email protected]] Sent: Wednesday, June 26, 2013 3:09 PM To: 'stunnel-users(a)stunnel.org' Subject: RE: Sending Email from PLC Without Authentication with gmail I added the following as Brian suggested. debug = 7 I tried doing output = stunnel.log but that cause an error when I reloded the config file. Here's the log after adding the above and trying to send another email. 2013.06.26 15:03:37 LOG7[10620:10992]: Service [smtps] (FD=416) bound to 0.0.0.0:25 2013.06.26 15:03:58 LOG7[10620:10992]: Service [smtps] accepted (FD=296) from 192.168.1.2:2946 2013.06.26 15:03:58 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:03:58 LOG7[10620:10992]: New thread created 2013.06.26 15:03:58 LOG7[10620:10360]: Service [smtps] started 2013.06.26 15:03:58 LOG5[10620:10360]: Service [smtps] accepted connection from 192.168.1.2:2946 2013.06.26 15:03:58 LOG6[10620:10360]: connect_blocking: connecting 74.125.130.108:465 2013.06.26 15:03:58 LOG7[10620:10360]: connect_blocking: s_poll_wait 74.125.130.108:465: waiting 10 seconds 2013.06.26 15:03:58 LOG5[10620:10360]: connect_blocking: connected 74.125.130.108:465 2013.06.26 15:03:58 LOG5[10620:10360]: Service [smtps] connected remote server from 192.168.1.31:53640 2013.06.26 15:03:58 LOG7[10620:10360]: Remote socket (FD=368) initialized 2013.06.26 15:03:58 LOG7[10620:10360]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): before/connect initialization 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 read server certificate A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 read server done A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 write client key exchange A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 flush data 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 read server session ticket A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:03:58 LOG7[10620:10360]: 1 items in the session cache 2013.06.26 15:03:58 LOG7[10620:10360]: 1 client connects (SSL_connect()) 2013.06.26 15:03:58 LOG7[10620:10360]: 1 client connects that finished 2013.06.26 15:03:58 LOG7[10620:10360]: 0 client renegotiations requested 2013.06.26 15:03:58 LOG7[10620:10360]: 0 server connects (SSL_accept()) 2013.06.26 15:03:58 LOG7[10620:10360]: 0 server connects that finished 2013.06.26 15:03:58 LOG7[10620:10360]: 0 server renegotiations requested 2013.06.26 15:03:58 LOG7[10620:10360]: 0 session cache hits 2013.06.26 15:03:58 LOG7[10620:10360]: 0 external session cache hits 2013.06.26 15:03:58 LOG7[10620:10360]: 0 session cache misses 2013.06.26 15:03:58 LOG7[10620:10360]: 0 session cache timeouts 2013.06.26 15:03:58 LOG7[10620:10360]: Peer certificate was cached (2266 bytes) 2013.06.26 15:03:58 LOG6[10620:10360]: SSL connected: new session negotiated 2013.06.26 15:03:58 LOG6[10620:10360]: Negotiated TLSv1/SSLv3 ciphersuite: AES128-SHA (128-bit encryption) 2013.06.26 15:03:58 LOG6[10620:10360]: Compression: null, expansion: null 2013.06.26 15:03:59 LOG6[10620:10360]: SSL socket closed (SSL_read) 2013.06.26 15:03:59 LOG7[10620:10360]: Sent socket write shutdown 2013.06.26 15:03:59 LOG5[10620:10360]: Connection closed: 65 byte(s) sent to SSL, 293 byte(s) sent to socket 2013.06.26 15:03:59 LOG7[10620:10360]: Remote socket (FD=368) closed 2013.06.26 15:03:59 LOG7[10620:10360]: Local socket (FD=296) closed 2013.06.26 15:03:59 LOG7[10620:10360]: Service [smtps] finished (0 left) 2013.06.26 15:03:59 LOG7[10620:10992]: Service [smtps] accepted (FD=364) from 192.168.1.2:2947 2013.06.26 15:03:59 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:03:59 LOG7[10620:10992]: New thread created 2013.06.26 15:03:59 LOG7[10620:7792]: Service [smtps] started 2013.06.26 15:03:59 LOG5[10620:7792]: Service [smtps] accepted connection from 192.168.1.2:2947 2013.06.26 15:03:59 LOG6[10620:7792]: connect_blocking: connecting 74.125.130.109:465 2013.06.26 15:03:59 LOG7[10620:7792]: connect_blocking: s_poll_wait 74.125.130.109:465: waiting 10 seconds 2013.06.26 15:03:59 LOG5[10620:7792]: connect_blocking: connected 74.125.130.109:465 2013.06.26 15:03:59 LOG5[10620:7792]: Service [smtps] connected remote server from 192.168.1.31:53641 2013.06.26 15:03:59 LOG7[10620:7792]: Remote socket (FD=368) initialized 2013.06.26 15:03:59 LOG7[10620:7792]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:03:59 LOG7[10620:7792]: SSL state (connect): before/connect initialization 2013.06.26 15:03:59 LOG7[10620:7792]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:03:59 LOG7[10620:7792]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:03:59 LOG7[10620:7792]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:03:59 LOG7[10620:7792]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:03:59 LOG7[10620:7792]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:03:59 LOG7[10620:7792]: SSL state (connect): SSLv3 flush data 2013.06.26 15:03:59 LOG7[10620:7792]: 1 items in the session cache 2013.06.26 15:03:59 LOG7[10620:7792]: 2 client connects (SSL_connect()) 2013.06.26 15:03:59 LOG7[10620:7792]: 2 client connects that finished 2013.06.26 15:03:59 LOG7[10620:7792]: 0 client renegotiations requested 2013.06.26 15:03:59 LOG7[10620:7792]: 0 server connects (SSL_accept()) 2013.06.26 15:03:59 LOG7[10620:7792]: 0 server connects that finished 2013.06.26 15:03:59 LOG7[10620:7792]: 0 server renegotiations requested 2013.06.26 15:03:59 LOG7[10620:7792]: 1 session cache hits 2013.06.26 15:03:59 LOG7[10620:7792]: 0 external session cache hits 2013.06.26 15:03:59 LOG7[10620:7792]: 0 session cache misses 2013.06.26 15:03:59 LOG7[10620:7792]: 0 session cache timeouts 2013.06.26 15:03:59 LOG6[10620:7792]: SSL connected: previous session reused 2013.06.26 15:04:00 LOG6[10620:7792]: SSL socket closed (SSL_read) 2013.06.26 15:04:00 LOG7[10620:7792]: Sent socket write shutdown 2013.06.26 15:04:00 LOG5[10620:7792]: Connection closed: 65 byte(s) sent to SSL, 287 byte(s) sent to socket 2013.06.26 15:04:00 LOG7[10620:7792]: Remote socket (FD=368) closed 2013.06.26 15:04:00 LOG7[10620:7792]: Local socket (FD=364) closed 2013.06.26 15:04:00 LOG7[10620:7792]: Service [smtps] finished (0 left) 2013.06.26 15:04:00 LOG7[10620:10992]: Service [smtps] accepted (FD=372) from 192.168.1.2:2948 2013.06.26 15:04:00 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:04:00 LOG7[10620:10992]: New thread created 2013.06.26 15:04:00 LOG7[10620:12944]: Service [smtps] started 2013.06.26 15:04:00 LOG5[10620:12944]: Service [smtps] accepted connection from 192.168.1.2:2948 2013.06.26 15:04:00 LOG6[10620:12944]: connect_blocking: connecting 74.125.130.108:465 2013.06.26 15:04:00 LOG7[10620:12944]: connect_blocking: s_poll_wait 74.125.130.108:465: waiting 10 seconds 2013.06.26 15:04:00 LOG5[10620:12944]: connect_blocking: connected 74.125.130.108:465 2013.06.26 15:04:00 LOG5[10620:12944]: Service [smtps] connected remote server from 192.168.1.31:53642 2013.06.26 15:04:00 LOG7[10620:12944]: Remote socket (FD=368) initialized 2013.06.26 15:04:00 LOG7[10620:12944]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:04:00 LOG7[10620:12944]: SSL state (connect): before/connect initialization 2013.06.26 15:04:00 LOG7[10620:12944]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:04:00 LOG7[10620:12944]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:04:00 LOG7[10620:12944]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:04:00 LOG7[10620:12944]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:04:00 LOG7[10620:12944]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:04:00 LOG7[10620:12944]: SSL state (connect): SSLv3 flush data 2013.06.26 15:04:00 LOG7[10620:12944]: 1 items in the session cache 2013.06.26 15:04:00 LOG7[10620:12944]: 3 client connects (SSL_connect()) 2013.06.26 15:04:00 LOG7[10620:12944]: 3 client connects that finished 2013.06.26 15:04:00 LOG7[10620:12944]: 0 client renegotiations requested 2013.06.26 15:04:00 LOG7[10620:12944]: 0 server connects (SSL_accept()) 2013.06.26 15:04:00 LOG7[10620:12944]: 0 server connects that finished 2013.06.26 15:04:00 LOG7[10620:12944]: 0 server renegotiations requested 2013.06.26 15:04:00 LOG7[10620:12944]: 2 session cache hits 2013.06.26 15:04:00 LOG7[10620:12944]: 0 external session cache hits 2013.06.26 15:04:00 LOG7[10620:12944]: 0 session cache misses 2013.06.26 15:04:00 LOG7[10620:12944]: 0 session cache timeouts 2013.06.26 15:04:00 LOG6[10620:12944]: SSL connected: previous session reused 2013.06.26 15:04:01 LOG6[10620:12944]: SSL socket closed (SSL_read) 2013.06.26 15:04:01 LOG7[10620:12944]: Sent socket write shutdown 2013.06.26 15:04:01 LOG5[10620:12944]: Connection closed: 65 byte(s) sent to SSL, 290 byte(s) sent to socket 2013.06.26 15:04:01 LOG7[10620:12944]: Remote socket (FD=368) closed 2013.06.26 15:04:01 LOG7[10620:12944]: Local socket (FD=372) closed 2013.06.26 15:04:01 LOG7[10620:12944]: Service [smtps] finished (0 left) 2013.06.26 15:04:01 LOG7[10620:10992]: Service [smtps] accepted (FD=288) from 192.168.1.2:2949 2013.06.26 15:04:01 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:04:01 LOG7[10620:10992]: New thread created 2013.06.26 15:04:01 LOG7[10620:12900]: Service [smtps] started 2013.06.26 15:04:01 LOG5[10620:12900]: Service [smtps] accepted connection from 192.168.1.2:2949 2013.06.26 15:04:01 LOG6[10620:12900]: connect_blocking: connecting 74.125.130.109:465 2013.06.26 15:04:01 LOG7[10620:12900]: connect_blocking: s_poll_wait 74.125.130.109:465: waiting 10 seconds 2013.06.26 15:04:01 LOG5[10620:12900]: connect_blocking: connected 74.125.130.109:465 2013.06.26 15:04:01 LOG5[10620:12900]: Service [smtps] connected remote server from 192.168.1.31:53643 2013.06.26 15:04:01 LOG7[10620:12900]: Remote socket (FD=368) initialized 2013.06.26 15:04:01 LOG7[10620:12900]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:04:01 LOG7[10620:12900]: SSL state (connect): before/connect initialization 2013.06.26 15:04:01 LOG7[10620:12900]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:04:01 LOG7[10620:12900]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:04:01 LOG7[10620:12900]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:04:01 LOG7[10620:12900]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:04:01 LOG7[10620:12900]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:04:01 LOG7[10620:12900]: SSL state (connect): SSLv3 flush data 2013.06.26 15:04:01 LOG7[10620:12900]: 1 items in the session cache 2013.06.26 15:04:01 LOG7[10620:12900]: 4 client connects (SSL_connect()) 2013.06.26 15:04:01 LOG7[10620:12900]: 4 client connects that finished 2013.06.26 15:04:01 LOG7[10620:12900]: 0 client renegotiations requested 2013.06.26 15:04:01 LOG7[10620:12900]: 0 server connects (SSL_accept()) 2013.06.26 15:04:01 LOG7[10620:12900]: 0 server connects that finished 2013.06.26 15:04:01 LOG7[10620:12900]: 0 server renegotiations requested 2013.06.26 15:04:01 LOG7[10620:12900]: 3 session cache hits 2013.06.26 15:04:01 LOG7[10620:12900]: 0 external session cache hits 2013.06.26 15:04:01 LOG7[10620:12900]: 0 session cache misses 2013.06.26 15:04:01 LOG7[10620:12900]: 0 session cache timeouts 2013.06.26 15:04:01 LOG6[10620:12900]: SSL connected: previous session reused 2013.06.26 15:04:02 LOG6[10620:12900]: SSL socket closed (SSL_read) 2013.06.26 15:04:02 LOG7[10620:12900]: Sent socket write shutdown 2013.06.26 15:04:02 LOG5[10620:12900]: Connection closed: 65 byte(s) sent to SSL, 293 byte(s) sent to socket 2013.06.26 15:04:02 LOG7[10620:12900]: Remote socket (FD=368) closed 2013.06.26 15:04:02 LOG7[10620:12900]: Local socket (FD=288) closed 2013.06.26 15:04:02 LOG7[10620:12900]: Service [smtps] finished (0 left) 2013.06.26 15:04:02 LOG7[10620:10992]: Service [smtps] accepted (FD=292) from 192.168.1.2:2950 2013.06.26 15:04:02 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:04:02 LOG7[10620:10992]: New thread created 2013.06.26 15:04:02 LOG7[10620:11560]: Service [smtps] started 2013.06.26 15:04:02 LOG5[10620:11560]: Service [smtps] accepted connection from 192.168.1.2:2950 2013.06.26 15:04:02 LOG6[10620:11560]: connect_blocking: connecting 74.125.130.108:465 2013.06.26 15:04:02 LOG7[10620:11560]: connect_blocking: s_poll_wait 74.125.130.108:465: waiting 10 seconds 2013.06.26 15:04:02 LOG5[10620:11560]: connect_blocking: connected 74.125.130.108:465 2013.06.26 15:04:02 LOG5[10620:11560]: Service [smtps] connected remote server from 192.168.1.31:53644 2013.06.26 15:04:02 LOG7[10620:11560]: Remote socket (FD=368) initialized 2013.06.26 15:04:02 LOG7[10620:11560]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:04:02 LOG7[10620:11560]: SSL state (connect): before/connect initialization 2013.06.26 15:04:02 LOG7[10620:11560]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:04:02 LOG7[10620:11560]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:04:02 LOG7[10620:11560]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:04:02 LOG7[10620:11560]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:04:02 LOG7[10620:11560]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:04:02 LOG7[10620:11560]: SSL state (connect): SSLv3 flush data 2013.06.26 15:04:02 LOG7[10620:11560]: 1 items in the session cache 2013.06.26 15:04:02 LOG7[10620:11560]: 5 client connects (SSL_connect()) 2013.06.26 15:04:02 LOG7[10620:11560]: 5 client connects that finished 2013.06.26 15:04:02 LOG7[10620:11560]: 0 client renegotiations requested 2013.06.26 15:04:02 LOG7[10620:11560]: 0 server connects (SSL_accept()) 2013.06.26 15:04:02 LOG7[10620:11560]: 0 server connects that finished 2013.06.26 15:04:02 LOG7[10620:11560]: 0 server renegotiations requested 2013.06.26 15:04:02 LOG7[10620:11560]: 4 session cache hits 2013.06.26 15:04:02 LOG7[10620:11560]: 0 external session cache hits 2013.06.26 15:04:02 LOG7[10620:11560]: 0 session cache misses 2013.06.26 15:04:02 LOG7[10620:11560]: 0 session cache timeouts 2013.06.26 15:04:02 LOG6[10620:11560]: SSL connected: previous session reused 2013.06.26 15:04:03 LOG6[10620:11560]: SSL socket closed (SSL_read) 2013.06.26 15:04:03 LOG7[10620:11560]: Sent socket write shutdown 2013.06.26 15:04:03 LOG5[10620:11560]: Connection closed: 65 byte(s) sent to SSL, 296 byte(s) sent to socket 2013.06.26 15:04:03 LOG7[10620:11560]: Remote socket (FD=368) closed 2013.06.26 15:04:03 LOG7[10620:11560]: Local socket (FD=292) closed 2013.06.26 15:04:03 LOG7[10620:11560]: Service [smtps] finished (0 left) 2013.06.26 15:04:03 LOG7[10620:10992]: Service [smtps] accepted (FD=296) from 192.168.1.2:2951 2013.06.26 15:04:03 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:04:03 LOG7[10620:10992]: New thread created 2013.06.26 15:04:03 LOG7[10620:10092]: Service [smtps] started 2013.06.26 15:04:03 LOG5[10620:10092]: Service [smtps] accepted connection from 192.168.1.2:2951 2013.06.26 15:04:03 LOG6[10620:10092]: connect_blocking: connecting 74.125.130.109:465 2013.06.26 15:04:03 LOG7[10620:10092]: connect_blocking: s_poll_wait 74.125.130.109:465: waiting 10 seconds 2013.06.26 15:04:03 LOG5[10620:10092]: connect_blocking: connected 74.125.130.109:465 2013.06.26 15:04:03 LOG5[10620:10092]: Service [smtps] connected remote server from 192.168.1.31:53645 2013.06.26 15:04:03 LOG7[10620:10092]: Remote socket (FD=368) initialized 2013.06.26 15:04:03 LOG7[10620:10092]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:04:03 LOG7[10620:10092]: SSL state (connect): before/connect initialization 2013.06.26 15:04:03 LOG7[10620:10092]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:04:03 LOG7[10620:10092]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:04:03 LOG7[10620:10092]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:04:03 LOG7[10620:10092]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:04:03 LOG7[10620:10092]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:04:03 LOG7[10620:10092]: SSL state (connect): SSLv3 flush data 2013.06.26 15:04:03 LOG7[10620:10092]: 1 items in the session cache 2013.06.26 15:04:03 LOG7[10620:10092]: 6 client connects (SSL_connect()) 2013.06.26 15:04:03 LOG7[10620:10092]: 6 client connects that finished 2013.06.26 15:04:03 LOG7[10620:10092]: 0 client renegotiations requested 2013.06.26 15:04:03 LOG7[10620:10092]: 0 server connects (SSL_accept()) 2013.06.26 15:04:03 LOG7[10620:10092]: 0 server connects that finished 2013.06.26 15:04:03 LOG7[10620:10092]: 0 server renegotiations requested 2013.06.26 15:04:03 LOG7[10620:10092]: 5 session cache hits 2013.06.26 15:04:03 LOG7[10620:10092]: 0 external session cache hits 2013.06.26 15:04:03 LOG7[10620:10092]: 0 session cache misses 2013.06.26 15:04:03 LOG7[10620:10092]: 0 session cache timeouts 2013.06.26 15:04:03 LOG6[10620:10092]: SSL connected: previous session reused 2013.06.26 15:04:04 LOG6[10620:10092]: SSL socket closed (SSL_read) 2013.06.26 15:04:04 LOG7[10620:10092]: Sent socket write shutdown 2013.06.26 15:04:04 LOG5[10620:10092]: Connection closed: 65 byte(s) sent to SSL, 290 byte(s) sent to socket 2013.06.26 15:04:04 LOG7[10620:10092]: Remote socket (FD=368) closed 2013.06.26 15:04:04 LOG7[10620:10092]: Local socket (FD=296) closed 2013.06.26 15:04:04 LOG7[10620:10092]: Service [smtps] finished (0 left) 2013.06.26 15:04:04 LOG7[10620:10992]: Service [smtps] accepted (FD=364) from 192.168.1.2:2952 2013.06.26 15:04:04 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:04:04 LOG7[10620:10992]: New thread created 2013.06.26 15:04:04 LOG7[10620:1404]: Service [smtps] started 2013.06.26 15:04:04 LOG5[10620:1404]: Service [smtps] accepted connection from 192.168.1.2:2952 2013.06.26 15:04:04 LOG6[10620:1404]: connect_blocking: connecting 74.125.130.108:465 2013.06.26 15:04:04 LOG7[10620:1404]: connect_blocking: s_poll_wait 74.125.130.108:465: waiting 10 seconds 2013.06.26 15:04:04 LOG5[10620:1404]: connect_blocking: connected 74.125.130.108:465 2013.06.26 15:04:04 LOG5[10620:1404]: Service [smtps] connected remote server from 192.168.1.31:53646 2013.06.26 15:04:04 LOG7[10620:1404]: Remote socket (FD=368) initialized 2013.06.26 15:04:04 LOG7[10620:1404]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:04:04 LOG7[10620:1404]: SSL state (connect): before/connect initialization 2013.06.26 15:04:04 LOG7[10620:1404]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:04:05 LOG7[10620:1404]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:04:05 LOG7[10620:1404]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:04:05 LOG7[10620:1404]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:04:05 LOG7[10620:1404]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:04:05 LOG7[10620:1404]: SSL state (connect): SSLv3 flush data 2013.06.26 15:04:05 LOG7[10620:1404]: 1 items in the session cache 2013.06.26 15:04:05 LOG7[10620:1404]: 7 client connects (SSL_connect()) 2013.06.26 15:04:05 LOG7[10620:1404]: 7 client connects that finished 2013.06.26 15:04:05 LOG7[10620:1404]: 0 client renegotiations requested 2013.06.26 15:04:05 LOG7[10620:1404]: 0 server connects (SSL_accept()) 2013.06.26 15:04:05 LOG7[10620:1404]: 0 server connects that finished 2013.06.26 15:04:05 LOG7[10620:1404]: 0 server renegotiations requested 2013.06.26 15:04:05 LOG7[10620:1404]: 6 session cache hits 2013.06.26 15:04:05 LOG7[10620:1404]: 0 external session cache hits 2013.06.26 15:04:05 LOG7[10620:1404]: 0 session cache misses 2013.06.26 15:04:05 LOG7[10620:1404]: 0 session cache timeouts 2013.06.26 15:04:05 LOG6[10620:1404]: SSL connected: previous session reused 2013.06.26 15:04:05 LOG6[10620:1404]: SSL socket closed (SSL_read) 2013.06.26 15:04:05 LOG7[10620:1404]: Sent socket write shutdown 2013.06.26 15:04:05 LOG5[10620:1404]: Connection closed: 65 byte(s) sent to SSL, 290 byte(s) sent to socket 2013.06.26 15:04:05 LOG7[10620:1404]: Remote socket (FD=368) closed 2013.06.26 15:04:05 LOG7[10620:1404]: Local socket (FD=364) closed 2013.06.26 15:04:05 LOG7[10620:1404]: Service [smtps] finished (0 left) 2013.06.26 15:04:05 LOG7[10620:10992]: Service [smtps] accepted (FD=372) from 192.168.1.2:2953 2013.06.26 15:04:05 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:04:05 LOG7[10620:10992]: New thread created 2013.06.26 15:04:05 LOG7[10620:11904]: Service [smtps] started 2013.06.26 15:04:05 LOG5[10620:11904]: Service [smtps] accepted connection from 192.168.1.2:2953 2013.06.26 15:04:05 LOG6[10620:11904]: connect_blocking: connecting 74.125.130.109:465 2013.06.26 15:04:05 LOG7[10620:11904]: connect_blocking: s_poll_wait 74.125.130.109:465: waiting 10 seconds 2013.06.26 15:04:06 LOG5[10620:11904]: connect_blocking: connected 74.125.130.109:465 2013.06.26 15:04:06 LOG5[10620:11904]: Service [smtps] connected remote server from 192.168.1.31:53647 2013.06.26 15:04:06 LOG7[10620:11904]: Remote socket (FD=368) initialized 2013.06.26 15:04:06 LOG7[10620:11904]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:04:06 LOG7[10620:11904]: SSL state (connect): before/connect initialization 2013.06.26 15:04:06 LOG7[10620:11904]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:04:06 LOG7[10620:11904]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:04:06 LOG7[10620:11904]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:04:06 LOG7[10620:11904]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:04:06 LOG7[10620:11904]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:04:06 LOG7[10620:11904]: SSL state (connect): SSLv3 flush data 2013.06.26 15:04:06 LOG7[10620:11904]: 1 items in the session cache 2013.06.26 15:04:06 LOG7[10620:11904]: 8 client connects (SSL_connect()) 2013.06.26 15:04:06 LOG7[10620:11904]: 8 client connects that finished 2013.06.26 15:04:06 LOG7[10620:11904]: 0 client renegotiations requested 2013.06.26 15:04:06 LOG7[10620:11904]: 0 server connects (SSL_accept()) 2013.06.26 15:04:06 LOG7[10620:11904]: 0 server connects that finished 2013.06.26 15:04:06 LOG7[10620:11904]: 0 server renegotiations requested 2013.06.26 15:04:06 LOG7[10620:11904]: 7 session cache hits 2013.06.26 15:04:06 LOG7[10620:11904]: 0 external session cache hits 2013.06.26 15:04:06 LOG7[10620:11904]: 0 session cache misses 2013.06.26 15:04:06 LOG7[10620:11904]: 0 session cache timeouts 2013.06.26 15:04:06 LOG6[10620:11904]: SSL connected: previous session reused 2013.06.26 15:04:06 LOG6[10620:11904]: SSL socket closed (SSL_read) 2013.06.26 15:04:06 LOG7[10620:11904]: Sent socket write shutdown 2013.06.26 15:04:06 LOG5[10620:11904]: Connection closed: 65 byte(s) sent to SSL, 290 byte(s) sent to socket 2013.06.26 15:04:06 LOG7[10620:11904]: Remote socket (FD=368) closed 2013.06.26 15:04:06 LOG7[10620:11904]: Local socket (FD=372) closed 2013.06.26 15:04:06 LOG7[10620:11904]: Service [smtps] finished (0 left) From: Stephen Gates [mailto:[email protected]] Sent: Wednesday, June 26, 2013 2:25 PM To: 'stunnel-users(a)stunnel.org' Subject: Sending Email from PLC Without Authentication with gmail A customer needs to send emails from a Programmable Logic Controller (PLC) which cannot provide authentication. The customer's email server is gmail which obviously requires authentication. The PLC IP is 192.168.1.2 and the PC IP on which stunnel is installed is 192.168.1.31 My config is: cert = stunnel.pem [smtps] client = yes accept = 25 connect = smtp.gmail.com:465 The PLC is set up to send emails to the IP of the PC 192.168.1.31 When I try to send emails I get the following in the stunnel log: 2013.06.26 14:26:30 LOG5[12384:13048]: Service [smtps] accepted connection from 192.168.1.2:2938 2013.06.26 14:26:30 LOG5[12384:13048]: connect_blocking: connected 74.125.130.108:465 2013.06.26 14:26:30 LOG5[12384:13048]: Service [smtps] connected remote server from 192.168.1.31:53599 Any help would be greatly appreciated! Stephen Gates Harold K. Scholz Company 7800 Serum Avenue Ralston, NE 68127 402-339-7600

1 0

Re: [stunnel-users] Sending Email from PLC Without Authentication with gmail
by Stephen Gates 26 Jun '13

26 Jun '13

I added the following as Bruce suggested. debug = 7 I tried doing output = stunnel.log but that cause an error when I reloded the config file. Here's the log after adding the above and trying to send another email. 2013.06.26 15:03:37 LOG7[10620:10992]: Service [smtps] (FD=416) bound to 0.0.0.0:25 2013.06.26 15:03:58 LOG7[10620:10992]: Service [smtps] accepted (FD=296) from 192.168.1.2:2946 2013.06.26 15:03:58 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:03:58 LOG7[10620:10992]: New thread created 2013.06.26 15:03:58 LOG7[10620:10360]: Service [smtps] started 2013.06.26 15:03:58 LOG5[10620:10360]: Service [smtps] accepted connection from 192.168.1.2:2946 2013.06.26 15:03:58 LOG6[10620:10360]: connect_blocking: connecting 74.125.130.108:465 2013.06.26 15:03:58 LOG7[10620:10360]: connect_blocking: s_poll_wait 74.125.130.108:465: waiting 10 seconds 2013.06.26 15:03:58 LOG5[10620:10360]: connect_blocking: connected 74.125.130.108:465 2013.06.26 15:03:58 LOG5[10620:10360]: Service [smtps] connected remote server from 192.168.1.31:53640 2013.06.26 15:03:58 LOG7[10620:10360]: Remote socket (FD=368) initialized 2013.06.26 15:03:58 LOG7[10620:10360]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): before/connect initialization 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 read server certificate A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 read server done A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 write client key exchange A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 flush data 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 read server session ticket A 2013.06.26 15:03:58 LOG7[10620:10360]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:03:58 LOG7[10620:10360]: 1 items in the session cache 2013.06.26 15:03:58 LOG7[10620:10360]: 1 client connects (SSL_connect()) 2013.06.26 15:03:58 LOG7[10620:10360]: 1 client connects that finished 2013.06.26 15:03:58 LOG7[10620:10360]: 0 client renegotiations requested 2013.06.26 15:03:58 LOG7[10620:10360]: 0 server connects (SSL_accept()) 2013.06.26 15:03:58 LOG7[10620:10360]: 0 server connects that finished 2013.06.26 15:03:58 LOG7[10620:10360]: 0 server renegotiations requested 2013.06.26 15:03:58 LOG7[10620:10360]: 0 session cache hits 2013.06.26 15:03:58 LOG7[10620:10360]: 0 external session cache hits 2013.06.26 15:03:58 LOG7[10620:10360]: 0 session cache misses 2013.06.26 15:03:58 LOG7[10620:10360]: 0 session cache timeouts 2013.06.26 15:03:58 LOG7[10620:10360]: Peer certificate was cached (2266 bytes) 2013.06.26 15:03:58 LOG6[10620:10360]: SSL connected: new session negotiated 2013.06.26 15:03:58 LOG6[10620:10360]: Negotiated TLSv1/SSLv3 ciphersuite: AES128-SHA (128-bit encryption) 2013.06.26 15:03:58 LOG6[10620:10360]: Compression: null, expansion: null 2013.06.26 15:03:59 LOG6[10620:10360]: SSL socket closed (SSL_read) 2013.06.26 15:03:59 LOG7[10620:10360]: Sent socket write shutdown 2013.06.26 15:03:59 LOG5[10620:10360]: Connection closed: 65 byte(s) sent to SSL, 293 byte(s) sent to socket 2013.06.26 15:03:59 LOG7[10620:10360]: Remote socket (FD=368) closed 2013.06.26 15:03:59 LOG7[10620:10360]: Local socket (FD=296) closed 2013.06.26 15:03:59 LOG7[10620:10360]: Service [smtps] finished (0 left) 2013.06.26 15:03:59 LOG7[10620:10992]: Service [smtps] accepted (FD=364) from 192.168.1.2:2947 2013.06.26 15:03:59 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:03:59 LOG7[10620:10992]: New thread created 2013.06.26 15:03:59 LOG7[10620:7792]: Service [smtps] started 2013.06.26 15:03:59 LOG5[10620:7792]: Service [smtps] accepted connection from 192.168.1.2:2947 2013.06.26 15:03:59 LOG6[10620:7792]: connect_blocking: connecting 74.125.130.109:465 2013.06.26 15:03:59 LOG7[10620:7792]: connect_blocking: s_poll_wait 74.125.130.109:465: waiting 10 seconds 2013.06.26 15:03:59 LOG5[10620:7792]: connect_blocking: connected 74.125.130.109:465 2013.06.26 15:03:59 LOG5[10620:7792]: Service [smtps] connected remote server from 192.168.1.31:53641 2013.06.26 15:03:59 LOG7[10620:7792]: Remote socket (FD=368) initialized 2013.06.26 15:03:59 LOG7[10620:7792]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:03:59 LOG7[10620:7792]: SSL state (connect): before/connect initialization 2013.06.26 15:03:59 LOG7[10620:7792]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:03:59 LOG7[10620:7792]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:03:59 LOG7[10620:7792]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:03:59 LOG7[10620:7792]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:03:59 LOG7[10620:7792]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:03:59 LOG7[10620:7792]: SSL state (connect): SSLv3 flush data 2013.06.26 15:03:59 LOG7[10620:7792]: 1 items in the session cache 2013.06.26 15:03:59 LOG7[10620:7792]: 2 client connects (SSL_connect()) 2013.06.26 15:03:59 LOG7[10620:7792]: 2 client connects that finished 2013.06.26 15:03:59 LOG7[10620:7792]: 0 client renegotiations requested 2013.06.26 15:03:59 LOG7[10620:7792]: 0 server connects (SSL_accept()) 2013.06.26 15:03:59 LOG7[10620:7792]: 0 server connects that finished 2013.06.26 15:03:59 LOG7[10620:7792]: 0 server renegotiations requested 2013.06.26 15:03:59 LOG7[10620:7792]: 1 session cache hits 2013.06.26 15:03:59 LOG7[10620:7792]: 0 external session cache hits 2013.06.26 15:03:59 LOG7[10620:7792]: 0 session cache misses 2013.06.26 15:03:59 LOG7[10620:7792]: 0 session cache timeouts 2013.06.26 15:03:59 LOG6[10620:7792]: SSL connected: previous session reused 2013.06.26 15:04:00 LOG6[10620:7792]: SSL socket closed (SSL_read) 2013.06.26 15:04:00 LOG7[10620:7792]: Sent socket write shutdown 2013.06.26 15:04:00 LOG5[10620:7792]: Connection closed: 65 byte(s) sent to SSL, 287 byte(s) sent to socket 2013.06.26 15:04:00 LOG7[10620:7792]: Remote socket (FD=368) closed 2013.06.26 15:04:00 LOG7[10620:7792]: Local socket (FD=364) closed 2013.06.26 15:04:00 LOG7[10620:7792]: Service [smtps] finished (0 left) 2013.06.26 15:04:00 LOG7[10620:10992]: Service [smtps] accepted (FD=372) from 192.168.1.2:2948 2013.06.26 15:04:00 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:04:00 LOG7[10620:10992]: New thread created 2013.06.26 15:04:00 LOG7[10620:12944]: Service [smtps] started 2013.06.26 15:04:00 LOG5[10620:12944]: Service [smtps] accepted connection from 192.168.1.2:2948 2013.06.26 15:04:00 LOG6[10620:12944]: connect_blocking: connecting 74.125.130.108:465 2013.06.26 15:04:00 LOG7[10620:12944]: connect_blocking: s_poll_wait 74.125.130.108:465: waiting 10 seconds 2013.06.26 15:04:00 LOG5[10620:12944]: connect_blocking: connected 74.125.130.108:465 2013.06.26 15:04:00 LOG5[10620:12944]: Service [smtps] connected remote server from 192.168.1.31:53642 2013.06.26 15:04:00 LOG7[10620:12944]: Remote socket (FD=368) initialized 2013.06.26 15:04:00 LOG7[10620:12944]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:04:00 LOG7[10620:12944]: SSL state (connect): before/connect initialization 2013.06.26 15:04:00 LOG7[10620:12944]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:04:00 LOG7[10620:12944]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:04:00 LOG7[10620:12944]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:04:00 LOG7[10620:12944]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:04:00 LOG7[10620:12944]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:04:00 LOG7[10620:12944]: SSL state (connect): SSLv3 flush data 2013.06.26 15:04:00 LOG7[10620:12944]: 1 items in the session cache 2013.06.26 15:04:00 LOG7[10620:12944]: 3 client connects (SSL_connect()) 2013.06.26 15:04:00 LOG7[10620:12944]: 3 client connects that finished 2013.06.26 15:04:00 LOG7[10620:12944]: 0 client renegotiations requested 2013.06.26 15:04:00 LOG7[10620:12944]: 0 server connects (SSL_accept()) 2013.06.26 15:04:00 LOG7[10620:12944]: 0 server connects that finished 2013.06.26 15:04:00 LOG7[10620:12944]: 0 server renegotiations requested 2013.06.26 15:04:00 LOG7[10620:12944]: 2 session cache hits 2013.06.26 15:04:00 LOG7[10620:12944]: 0 external session cache hits 2013.06.26 15:04:00 LOG7[10620:12944]: 0 session cache misses 2013.06.26 15:04:00 LOG7[10620:12944]: 0 session cache timeouts 2013.06.26 15:04:00 LOG6[10620:12944]: SSL connected: previous session reused 2013.06.26 15:04:01 LOG6[10620:12944]: SSL socket closed (SSL_read) 2013.06.26 15:04:01 LOG7[10620:12944]: Sent socket write shutdown 2013.06.26 15:04:01 LOG5[10620:12944]: Connection closed: 65 byte(s) sent to SSL, 290 byte(s) sent to socket 2013.06.26 15:04:01 LOG7[10620:12944]: Remote socket (FD=368) closed 2013.06.26 15:04:01 LOG7[10620:12944]: Local socket (FD=372) closed 2013.06.26 15:04:01 LOG7[10620:12944]: Service [smtps] finished (0 left) 2013.06.26 15:04:01 LOG7[10620:10992]: Service [smtps] accepted (FD=288) from 192.168.1.2:2949 2013.06.26 15:04:01 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:04:01 LOG7[10620:10992]: New thread created 2013.06.26 15:04:01 LOG7[10620:12900]: Service [smtps] started 2013.06.26 15:04:01 LOG5[10620:12900]: Service [smtps] accepted connection from 192.168.1.2:2949 2013.06.26 15:04:01 LOG6[10620:12900]: connect_blocking: connecting 74.125.130.109:465 2013.06.26 15:04:01 LOG7[10620:12900]: connect_blocking: s_poll_wait 74.125.130.109:465: waiting 10 seconds 2013.06.26 15:04:01 LOG5[10620:12900]: connect_blocking: connected 74.125.130.109:465 2013.06.26 15:04:01 LOG5[10620:12900]: Service [smtps] connected remote server from 192.168.1.31:53643 2013.06.26 15:04:01 LOG7[10620:12900]: Remote socket (FD=368) initialized 2013.06.26 15:04:01 LOG7[10620:12900]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:04:01 LOG7[10620:12900]: SSL state (connect): before/connect initialization 2013.06.26 15:04:01 LOG7[10620:12900]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:04:01 LOG7[10620:12900]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:04:01 LOG7[10620:12900]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:04:01 LOG7[10620:12900]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:04:01 LOG7[10620:12900]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:04:01 LOG7[10620:12900]: SSL state (connect): SSLv3 flush data 2013.06.26 15:04:01 LOG7[10620:12900]: 1 items in the session cache 2013.06.26 15:04:01 LOG7[10620:12900]: 4 client connects (SSL_connect()) 2013.06.26 15:04:01 LOG7[10620:12900]: 4 client connects that finished 2013.06.26 15:04:01 LOG7[10620:12900]: 0 client renegotiations requested 2013.06.26 15:04:01 LOG7[10620:12900]: 0 server connects (SSL_accept()) 2013.06.26 15:04:01 LOG7[10620:12900]: 0 server connects that finished 2013.06.26 15:04:01 LOG7[10620:12900]: 0 server renegotiations requested 2013.06.26 15:04:01 LOG7[10620:12900]: 3 session cache hits 2013.06.26 15:04:01 LOG7[10620:12900]: 0 external session cache hits 2013.06.26 15:04:01 LOG7[10620:12900]: 0 session cache misses 2013.06.26 15:04:01 LOG7[10620:12900]: 0 session cache timeouts 2013.06.26 15:04:01 LOG6[10620:12900]: SSL connected: previous session reused 2013.06.26 15:04:02 LOG6[10620:12900]: SSL socket closed (SSL_read) 2013.06.26 15:04:02 LOG7[10620:12900]: Sent socket write shutdown 2013.06.26 15:04:02 LOG5[10620:12900]: Connection closed: 65 byte(s) sent to SSL, 293 byte(s) sent to socket 2013.06.26 15:04:02 LOG7[10620:12900]: Remote socket (FD=368) closed 2013.06.26 15:04:02 LOG7[10620:12900]: Local socket (FD=288) closed 2013.06.26 15:04:02 LOG7[10620:12900]: Service [smtps] finished (0 left) 2013.06.26 15:04:02 LOG7[10620:10992]: Service [smtps] accepted (FD=292) from 192.168.1.2:2950 2013.06.26 15:04:02 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:04:02 LOG7[10620:10992]: New thread created 2013.06.26 15:04:02 LOG7[10620:11560]: Service [smtps] started 2013.06.26 15:04:02 LOG5[10620:11560]: Service [smtps] accepted connection from 192.168.1.2:2950 2013.06.26 15:04:02 LOG6[10620:11560]: connect_blocking: connecting 74.125.130.108:465 2013.06.26 15:04:02 LOG7[10620:11560]: connect_blocking: s_poll_wait 74.125.130.108:465: waiting 10 seconds 2013.06.26 15:04:02 LOG5[10620:11560]: connect_blocking: connected 74.125.130.108:465 2013.06.26 15:04:02 LOG5[10620:11560]: Service [smtps] connected remote server from 192.168.1.31:53644 2013.06.26 15:04:02 LOG7[10620:11560]: Remote socket (FD=368) initialized 2013.06.26 15:04:02 LOG7[10620:11560]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:04:02 LOG7[10620:11560]: SSL state (connect): before/connect initialization 2013.06.26 15:04:02 LOG7[10620:11560]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:04:02 LOG7[10620:11560]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:04:02 LOG7[10620:11560]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:04:02 LOG7[10620:11560]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:04:02 LOG7[10620:11560]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:04:02 LOG7[10620:11560]: SSL state (connect): SSLv3 flush data 2013.06.26 15:04:02 LOG7[10620:11560]: 1 items in the session cache 2013.06.26 15:04:02 LOG7[10620:11560]: 5 client connects (SSL_connect()) 2013.06.26 15:04:02 LOG7[10620:11560]: 5 client connects that finished 2013.06.26 15:04:02 LOG7[10620:11560]: 0 client renegotiations requested 2013.06.26 15:04:02 LOG7[10620:11560]: 0 server connects (SSL_accept()) 2013.06.26 15:04:02 LOG7[10620:11560]: 0 server connects that finished 2013.06.26 15:04:02 LOG7[10620:11560]: 0 server renegotiations requested 2013.06.26 15:04:02 LOG7[10620:11560]: 4 session cache hits 2013.06.26 15:04:02 LOG7[10620:11560]: 0 external session cache hits 2013.06.26 15:04:02 LOG7[10620:11560]: 0 session cache misses 2013.06.26 15:04:02 LOG7[10620:11560]: 0 session cache timeouts 2013.06.26 15:04:02 LOG6[10620:11560]: SSL connected: previous session reused 2013.06.26 15:04:03 LOG6[10620:11560]: SSL socket closed (SSL_read) 2013.06.26 15:04:03 LOG7[10620:11560]: Sent socket write shutdown 2013.06.26 15:04:03 LOG5[10620:11560]: Connection closed: 65 byte(s) sent to SSL, 296 byte(s) sent to socket 2013.06.26 15:04:03 LOG7[10620:11560]: Remote socket (FD=368) closed 2013.06.26 15:04:03 LOG7[10620:11560]: Local socket (FD=292) closed 2013.06.26 15:04:03 LOG7[10620:11560]: Service [smtps] finished (0 left) 2013.06.26 15:04:03 LOG7[10620:10992]: Service [smtps] accepted (FD=296) from 192.168.1.2:2951 2013.06.26 15:04:03 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:04:03 LOG7[10620:10992]: New thread created 2013.06.26 15:04:03 LOG7[10620:10092]: Service [smtps] started 2013.06.26 15:04:03 LOG5[10620:10092]: Service [smtps] accepted connection from 192.168.1.2:2951 2013.06.26 15:04:03 LOG6[10620:10092]: connect_blocking: connecting 74.125.130.109:465 2013.06.26 15:04:03 LOG7[10620:10092]: connect_blocking: s_poll_wait 74.125.130.109:465: waiting 10 seconds 2013.06.26 15:04:03 LOG5[10620:10092]: connect_blocking: connected 74.125.130.109:465 2013.06.26 15:04:03 LOG5[10620:10092]: Service [smtps] connected remote server from 192.168.1.31:53645 2013.06.26 15:04:03 LOG7[10620:10092]: Remote socket (FD=368) initialized 2013.06.26 15:04:03 LOG7[10620:10092]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:04:03 LOG7[10620:10092]: SSL state (connect): before/connect initialization 2013.06.26 15:04:03 LOG7[10620:10092]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:04:03 LOG7[10620:10092]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:04:03 LOG7[10620:10092]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:04:03 LOG7[10620:10092]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:04:03 LOG7[10620:10092]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:04:03 LOG7[10620:10092]: SSL state (connect): SSLv3 flush data 2013.06.26 15:04:03 LOG7[10620:10092]: 1 items in the session cache 2013.06.26 15:04:03 LOG7[10620:10092]: 6 client connects (SSL_connect()) 2013.06.26 15:04:03 LOG7[10620:10092]: 6 client connects that finished 2013.06.26 15:04:03 LOG7[10620:10092]: 0 client renegotiations requested 2013.06.26 15:04:03 LOG7[10620:10092]: 0 server connects (SSL_accept()) 2013.06.26 15:04:03 LOG7[10620:10092]: 0 server connects that finished 2013.06.26 15:04:03 LOG7[10620:10092]: 0 server renegotiations requested 2013.06.26 15:04:03 LOG7[10620:10092]: 5 session cache hits 2013.06.26 15:04:03 LOG7[10620:10092]: 0 external session cache hits 2013.06.26 15:04:03 LOG7[10620:10092]: 0 session cache misses 2013.06.26 15:04:03 LOG7[10620:10092]: 0 session cache timeouts 2013.06.26 15:04:03 LOG6[10620:10092]: SSL connected: previous session reused 2013.06.26 15:04:04 LOG6[10620:10092]: SSL socket closed (SSL_read) 2013.06.26 15:04:04 LOG7[10620:10092]: Sent socket write shutdown 2013.06.26 15:04:04 LOG5[10620:10092]: Connection closed: 65 byte(s) sent to SSL, 290 byte(s) sent to socket 2013.06.26 15:04:04 LOG7[10620:10092]: Remote socket (FD=368) closed 2013.06.26 15:04:04 LOG7[10620:10092]: Local socket (FD=296) closed 2013.06.26 15:04:04 LOG7[10620:10092]: Service [smtps] finished (0 left) 2013.06.26 15:04:04 LOG7[10620:10992]: Service [smtps] accepted (FD=364) from 192.168.1.2:2952 2013.06.26 15:04:04 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:04:04 LOG7[10620:10992]: New thread created 2013.06.26 15:04:04 LOG7[10620:1404]: Service [smtps] started 2013.06.26 15:04:04 LOG5[10620:1404]: Service [smtps] accepted connection from 192.168.1.2:2952 2013.06.26 15:04:04 LOG6[10620:1404]: connect_blocking: connecting 74.125.130.108:465 2013.06.26 15:04:04 LOG7[10620:1404]: connect_blocking: s_poll_wait 74.125.130.108:465: waiting 10 seconds 2013.06.26 15:04:04 LOG5[10620:1404]: connect_blocking: connected 74.125.130.108:465 2013.06.26 15:04:04 LOG5[10620:1404]: Service [smtps] connected remote server from 192.168.1.31:53646 2013.06.26 15:04:04 LOG7[10620:1404]: Remote socket (FD=368) initialized 2013.06.26 15:04:04 LOG7[10620:1404]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:04:04 LOG7[10620:1404]: SSL state (connect): before/connect initialization 2013.06.26 15:04:04 LOG7[10620:1404]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:04:05 LOG7[10620:1404]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:04:05 LOG7[10620:1404]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:04:05 LOG7[10620:1404]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:04:05 LOG7[10620:1404]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:04:05 LOG7[10620:1404]: SSL state (connect): SSLv3 flush data 2013.06.26 15:04:05 LOG7[10620:1404]: 1 items in the session cache 2013.06.26 15:04:05 LOG7[10620:1404]: 7 client connects (SSL_connect()) 2013.06.26 15:04:05 LOG7[10620:1404]: 7 client connects that finished 2013.06.26 15:04:05 LOG7[10620:1404]: 0 client renegotiations requested 2013.06.26 15:04:05 LOG7[10620:1404]: 0 server connects (SSL_accept()) 2013.06.26 15:04:05 LOG7[10620:1404]: 0 server connects that finished 2013.06.26 15:04:05 LOG7[10620:1404]: 0 server renegotiations requested 2013.06.26 15:04:05 LOG7[10620:1404]: 6 session cache hits 2013.06.26 15:04:05 LOG7[10620:1404]: 0 external session cache hits 2013.06.26 15:04:05 LOG7[10620:1404]: 0 session cache misses 2013.06.26 15:04:05 LOG7[10620:1404]: 0 session cache timeouts 2013.06.26 15:04:05 LOG6[10620:1404]: SSL connected: previous session reused 2013.06.26 15:04:05 LOG6[10620:1404]: SSL socket closed (SSL_read) 2013.06.26 15:04:05 LOG7[10620:1404]: Sent socket write shutdown 2013.06.26 15:04:05 LOG5[10620:1404]: Connection closed: 65 byte(s) sent to SSL, 290 byte(s) sent to socket 2013.06.26 15:04:05 LOG7[10620:1404]: Remote socket (FD=368) closed 2013.06.26 15:04:05 LOG7[10620:1404]: Local socket (FD=364) closed 2013.06.26 15:04:05 LOG7[10620:1404]: Service [smtps] finished (0 left) 2013.06.26 15:04:05 LOG7[10620:10992]: Service [smtps] accepted (FD=372) from 192.168.1.2:2953 2013.06.26 15:04:05 LOG7[10620:10992]: Creating a new thread 2013.06.26 15:04:05 LOG7[10620:10992]: New thread created 2013.06.26 15:04:05 LOG7[10620:11904]: Service [smtps] started 2013.06.26 15:04:05 LOG5[10620:11904]: Service [smtps] accepted connection from 192.168.1.2:2953 2013.06.26 15:04:05 LOG6[10620:11904]: connect_blocking: connecting 74.125.130.109:465 2013.06.26 15:04:05 LOG7[10620:11904]: connect_blocking: s_poll_wait 74.125.130.109:465: waiting 10 seconds 2013.06.26 15:04:06 LOG5[10620:11904]: connect_blocking: connected 74.125.130.109:465 2013.06.26 15:04:06 LOG5[10620:11904]: Service [smtps] connected remote server from 192.168.1.31:53647 2013.06.26 15:04:06 LOG7[10620:11904]: Remote socket (FD=368) initialized 2013.06.26 15:04:06 LOG7[10620:11904]: SNI: sending servername: smtp.gmail.com 2013.06.26 15:04:06 LOG7[10620:11904]: SSL state (connect): before/connect initialization 2013.06.26 15:04:06 LOG7[10620:11904]: SSL state (connect): SSLv3 write client hello A 2013.06.26 15:04:06 LOG7[10620:11904]: SSL state (connect): SSLv3 read server hello A 2013.06.26 15:04:06 LOG7[10620:11904]: SSL state (connect): SSLv3 read finished A 2013.06.26 15:04:06 LOG7[10620:11904]: SSL state (connect): SSLv3 write change cipher spec A 2013.06.26 15:04:06 LOG7[10620:11904]: SSL state (connect): SSLv3 write finished A 2013.06.26 15:04:06 LOG7[10620:11904]: SSL state (connect): SSLv3 flush data 2013.06.26 15:04:06 LOG7[10620:11904]: 1 items in the session cache 2013.06.26 15:04:06 LOG7[10620:11904]: 8 client connects (SSL_connect()) 2013.06.26 15:04:06 LOG7[10620:11904]: 8 client connects that finished 2013.06.26 15:04:06 LOG7[10620:11904]: 0 client renegotiations requested 2013.06.26 15:04:06 LOG7[10620:11904]: 0 server connects (SSL_accept()) 2013.06.26 15:04:06 LOG7[10620:11904]: 0 server connects that finished 2013.06.26 15:04:06 LOG7[10620:11904]: 0 server renegotiations requested 2013.06.26 15:04:06 LOG7[10620:11904]: 7 session cache hits 2013.06.26 15:04:06 LOG7[10620:11904]: 0 external session cache hits 2013.06.26 15:04:06 LOG7[10620:11904]: 0 session cache misses 2013.06.26 15:04:06 LOG7[10620:11904]: 0 session cache timeouts 2013.06.26 15:04:06 LOG6[10620:11904]: SSL connected: previous session reused 2013.06.26 15:04:06 LOG6[10620:11904]: SSL socket closed (SSL_read) 2013.06.26 15:04:06 LOG7[10620:11904]: Sent socket write shutdown 2013.06.26 15:04:06 LOG5[10620:11904]: Connection closed: 65 byte(s) sent to SSL, 290 byte(s) sent to socket 2013.06.26 15:04:06 LOG7[10620:11904]: Remote socket (FD=368) closed 2013.06.26 15:04:06 LOG7[10620:11904]: Local socket (FD=372) closed 2013.06.26 15:04:06 LOG7[10620:11904]: Service [smtps] finished (0 left) From: Stephen Gates [mailto:[email protected]] Sent: Wednesday, June 26, 2013 2:25 PM To: 'stunnel-users(a)stunnel.org' Subject: Sending Email from PLC Without Authentication with gmail A customer needs to send emails from a Programmable Logic Controller (PLC) which cannot provide authentication. The customer's email server is gmail which obviously requires authentication. The PLC IP is 192.168.1.2 and the PC IP on which stunnel is installed is 192.168.1.31 My config is: cert = stunnel.pem [smtps] client = yes accept = 25 connect = smtp.gmail.com:465 The PLC is set up to send emails to the IP of the PC 192.168.1.31 When I try to send emails I get the following in the stunnel log: 2013.06.26 14:26:30 LOG5[12384:13048]: Service [smtps] accepted connection from 192.168.1.2:2938 2013.06.26 14:26:30 LOG5[12384:13048]: connect_blocking: connected 74.125.130.108:465 2013.06.26 14:26:30 LOG5[12384:13048]: Service [smtps] connected remote server from 192.168.1.31:53599 Any help would be greatly appreciated! Stephen Gates Harold K. Scholz Company 7800 Serum Avenue Ralston, NE 68127 402-339-7600

1 0

Re: [stunnel-users] "Broken pipe" issue
by Ron McWilliams 21 Jun '13

21 Jun '13

I have the same issue with the broken pipe on my stunnel. Here is the revealing log clip. appsadmin@MIRTHTEST:/etc/stunnel.d$ sudo tail -f /var/log/stunnel_mirth.log 2013.06.21 17:28:03 LOG7[30980:3077569344]: Service hl7_client prod finished (1 left) 2013.06.21 17:28:03 LOG7[30980:3077569344]: str_stats: 0 block(s), 0 data byte(s), 0 control byte(s) 2013.06.21 17:28:14 LOG6[30980:3073227584]: SSL connected: previous session reused 2013.06.21 17:28:14 LOG7[30980:3073227584]: Socket closed on read 2013.06.21 17:28:14 LOG7[30980:3073227584]: Sending SSL write shutdown 2013.06.21 17:28:14 LOG6[30980:3073227584]: SSL_shutdown successfully sent close_notify 2013.06.21 17:28:24 LOG5[30980:3073227584]: Error detected on socket (read) file descriptor: Broken pipe (32) 2013.06.21 17:28:24 LOG5[30980:3073227584]: Connection reset: 661 bytes sent to SSL, 124 bytes sent to socket 2013.06.21 17:28:24 LOG7[30980:3073227584]: Service hl7_client prod finished (0 left) 2013.06.21 17:28:24 LOG7[30980:3073227584]: str_stats: 0 block(s), 0 data byte(s), 0 control byte(s) Was there a simple edit to the conf file and if so, could you send the sample settings. Thank you, rmcwilli

1 0

Re: [stunnel-users] Broken pipes and TCP resets on parallel requests over stunnel
by Ron McWilliams 21 Jun '13

21 Jun '13

I have essentially the same issue. We were successfully sending messages and receiving ACK prior to this glitch. I am on Ubuntu 12.04 LTS using stunnel 4.50. appsadmin@MIRTHTEST:/etc/stunnel.d$ sudo tail -f /var/log/stunnel_mirth.log 2013.06.21 17:28:03 LOG7[30980:3077569344]: Service hl7_client prod finished (1 left) 2013.06.21 17:28:03 LOG7[30980:3077569344]: str_stats: 0 block(s), 0 data byte(s), 0 control byte(s) 2013.06.21 17:28:14 LOG6[30980:3073227584]: SSL connected: previous session reused 2013.06.21 17:28:14 LOG7[30980:3073227584]: Socket closed on read 2013.06.21 17:28:14 LOG7[30980:3073227584]: Sending SSL write shutdown 2013.06.21 17:28:14 LOG6[30980:3073227584]: SSL_shutdown successfully sent close_notify 2013.06.21 17:28:24 LOG5[30980:3073227584]: Error detected on socket (read) file descriptor: Broken pipe (32) 2013.06.21 17:28:24 LOG5[30980:3073227584]: Connection reset: 661 bytes sent to SSL, 124 bytes sent to socket 2013.06.21 17:28:24 LOG7[30980:3073227584]: Service hl7_client prod finished (0 left) 2013.06.21 17:28:24 LOG7[30980:3073227584]: str_stats: 0 block(s), 0 data byte(s), 0 control byte(s) rmcwilli

1 0

certificate verify failed
by Roman Tuchyna 19 Jun '13

19 Jun '13

Hi All, I'm trying to create SSl tunnel between my server (Win 2008 R2, 4.56 version of stunnel) and remote application server - I have merged both root and sub certificate into 1 file and it looks like it can verify them and accept them as well, but then it tries to verify it at depth=0 and says certificate not found in local repository. Am I missing anything here ? (I modified messages to not disclose details of certificates in the debug below). Thank you! BR, Roman 2013.06.18 11:22:34 LOG7[272:2156]: Service [SZX] started 2013.06.18 11:22:34 LOG5[272:2156]: Service [SZX] accepted connection from 127.0.0.1:49397 2013.06.18 11:22:34 LOG6[272:2156]: connect_blocking: connecting 10.254.0.21:443 2013.06.18 11:22:34 LOG7[272:2156]: connect_blocking: s_poll_wait 10.254.0.21:443: waiting 10 seconds 2013.06.18 11:22:34 LOG5[272:2156]: connect_blocking: connected 10.254.0.21:443 2013.06.18 11:22:34 LOG5[272:2156]: Service [SZX] connected remote server from 192.168.20.23:49398 2013.06.18 11:22:34 LOG7[272:2156]: Remote socket (FD=396) initialized 2013.06.18 11:22:34 LOG7[272:2156]: SNI: sending servername: 10.254.0.21 2013.06.18 11:22:34 LOG7[272:2156]: SSL state (connect): before/connect initialization 2013.06.18 11:22:34 LOG7[272:2156]: SSL state (connect): SSLv3 write client hello A 2013.06.18 11:22:34 LOG7[272:2156]: SSL state (connect): SSLv3 read server hello A 2013.06.18 11:22:34 LOG7[272:2156]: Starting certificate verification: depth=2, /CN=xxx RootCA 2013.06.18 11:22:34 LOG5[272:2156]: Certificate accepted: depth=2, /CN=xxx RootCA 2013.06.18 11:22:34 LOG7[272:2156]: Starting certificate verification: depth=1, /CN=xxx 2013.06.18 11:22:34 LOG5[272:2156]: Certificate accepted: depth=1, /CN=xxx SubCA1 2013.06.18 11:22:34 LOG7[272:2156]: Starting certificate verification: depth=0, /C=zzz 2013.06.18 11:22:34 LOG4[272:2156]: CERT: Certificate not found in local repository 2013.06.18 11:22:34 LOG4[272:2156]: Certificate check failed: depth=0, /C=zzz 2013.06.18 11:22:34 LOG7[272:2156]: SSL alert (write): fatal: certificate unknown 2013.06.18 11:22:34 LOG3[272:2156]: SSL_connect: 14090086: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed 2013.06.18 11:22:34 LOG5[272:2156]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2013.06.18 11:22:34 LOG7[272:2156]: Remote socket (FD=396) closed 2013.06.18 11:22:34 LOG7[272:2156]: Local socket (FD=376) closed 2013.06.18 11:22:34 LOG7[272:2156]: Service [SZX] finished (0 left)

3 2

stunnel RHEL 6.3 and HTTPS header fields
by xxxxxxxxxxxxxxxxx 16 Jun '13

16 Jun '13

I'm an Stunnel newbie so forgive me if this question has been asked previously. I am using stunnel to accept a connection from http://127.0.0.1:someport/url/to/wsdland connect to hostname.somewhere.abc:443 Everything is working fine with the exception of a certain endpoint that responds with an HTTP status code of 403 "forbidden". What I have determined is that the server is rejecting the request due to the HTTP "Host:" field value, it's set to 127.0.0.1. Is there anyway to pass the value of the config file "connect" property instead (in my case "hostname.somewhere")?I have tried various config settings without success. Config entry: [testnesiis]client = yesaccept = 127.0.0.1:1445connect = testnesiis:443;protocolHost = testnesiis:443protocol = proxy;sni = testnesiis;transparent = both Thanks and Kudos to the authors of stunnel !

2 1

Certificate failure to verify with verify = 4 option
by Thomas Eifert 16 Jun '13

16 Jun '13

Greetings; Stunnel 4.56 running under Win 7 SP1 x86. Recently, the owners of a server I regularly connect to updated their server certificate; the former had expired at the end of May. As soon as that event occurred, I deleted the old certificate, then used the "save peer certificate" function of Stunnel to get the updated one. However, the new certificate fails to verify, even with the verify = 4 option in Stunnel. The error message is similar to what I used to get when doing a verify = 3 with some certificates. The general error output of Stunnel is: CERT: Verification error: unable to get local issuer certificate 2013.06.09 16:37:46 LOG4[608:2336]: Certificate check failed: depth=0 When I open the new certificate with: openssl x509 -text -in certname.pem and view the certificate details, I'm not seeing anything obvious. The certificate is within a valid date range, and contains the same basic elements as other certs I've viewed. The certificate appears to have been issued by Startcom LLC. If I comment out the verify statement, I'm able to successfully negotiate an SSL connection with the server. I realize that this may be more of an openssl issue than an issue with Stunnel. Nevertheless, I thought I'd start here and throw it out to the floor for comments. Anyone have any ideas or have run into this issue? Regards, Thomas -- Attention: This message and all attachments are private and may contain information that is confidential and privileged. If you received this message in error, please notify the sender by reply email and delete the message immediately.

2 2

tuning/multiple stunnel instance
by William Kwan 13 Jun '13

13 Jun '13

Dear all, I would like to find out if there's anyway to tune stunnel or what's the best practice you would recommend. I have a bit more than 100 sessions defined in stunnel.conf. It appears that clients started to see latency increase. Would you say 1. Split the conf file to multiple conf files and start multiple stunnel with each conf file? 2. Any way to tune stunnel to run muliple process with more threads? 3. Any other options? Thanks Will

2 1