[stunnel-users] Temporary failure in name resolution
Michal.Trojnara at mirt.net
Tue Apr 26 11:00:18 CEST 2011
Phil Wieland wrote:
> I'm running stunnel4 version 4.29 on an Ubuntu server box, using it to
> tunnel smtp connections to my ISP's mail server. Everything works
> perfectly until I reboot the server, when it stops working.
> Apr 24 15:56:11 friedbread stunnel: LOG3[1101:3074997104]: Error
> resolving 'smtp.blueyonder.co.uk': Temporary failure in name resolution
Try the following patch:
The patch should make stunnel wait for your DHCP to be finished.
> Looking at syslog for boot time, it looks like stunnel tries to resolve
> smtp.blueyonder.co.uk as soon as it starts, but dhcp hasn't finished at
> this time so it fails. It seems to cache something from the failure and
> not try again? Even though the error is "Temporary".
This "caching" is very interesting indeed.
Could you attach
strace -f -p <pid_of_stunnel>
, make a connection, and send us the output? Also try with
ltrace -f -p <pid_of_stunnel>
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