[stunnel-users] stunnel 4.33 stops (crashes?) after undetermined running time
M.Borst at hrz.tu-darmstadt.de
Wed May 26 15:47:23 CEST 2010
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
- 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
Adresse: Petersentrasse 30, 64287 Darmstadt, Germany
Email: M.Borst at hrz.tu-darmstadt.de
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