To repeat: - stunnel 4.33 service just crashes after some time. - older stunnel versions do not crash This looks like a bug in stunnel. Who do I contact because of this? How do I contact him or her? Is more information needed, if so, which? Greetings Markus Borst -------- Original Message -------- Subject: [stunnel-users] stunnel 4.33 stops (crashes?) after undetermined running time From: Markus Borst <[email protected]> To: [email protected] Date: 26.05.2010 15:47

Hi,

I have a strange problem with current stunnel (4.33): It just crashes after some time. The time is variable, I suspect it stops after a number of connections.

System: - Windows Server 2003 SP2 (also happens on Windows Server 2008R2) - stunnel runs as service - stunnel is configured to run as ssl server for imap and pop3 with our certificate (including key-chain)

stunnel was running fine for years on the Windows Server 2003. After upgrade to stunnel 4.33, the stunnel service process first worked fine, the just stopped working after some time: - The windows service "stunnel" was stopped - the stunnel.log (standard debug level) showed not error or other entry at the time of the stop. - The windows eventlog shows: ====== Event 7034, Service Control Manager The stunnel service terminated unexpectedly. It has done this 1 time(s). ====== (I'm not 100% sure, whether this event log message corresponds to the stunnel crash I described or to another crash.)

I have downgrade to version 4.32, the stunnel service now runs uninterrupted as before.

Since the time of crash varies somewhat, seemingly with the current load of the server, I suspect that stunnel crashes after a certain amount of ssl connections, but I'm not sure. This has happened on two different servers (Windows Server 2003 SP2 and Windows Server 2008 R2).

Is this a known problem?

I'd love to do some further tests, but since this is a production system, I cannot test it in our normal environment. A program to generate random ssl connections would come handy to further analyze the problem.

Greetings Markus Borst

-- TU Darmstadt Hochschulrechenzentrum (HRZ) Markus Borst Adresse: Petersentrasse 30, 64287 Darmstadt, Germany Tel.: 06151/16-2056 Email: [email protected]