Dovecot con Autentication Checkpassword error signal 111

[Aki Tuomi]

> On September 13, 2016 at 10:55 AM zerocool at modemsoft.it wrote:
> 
> 
> Good morning,
> It is the first time I write in this mailing list and I apologize in  
> advance for possible nonsense that i can write.
> I have a mail server with qmail + courier imap and I would "Migrate"  
> to dovecot.
> I installed the package and configured the components necessary to me  
> using as system autentication checkpassword.
> I have verified the checkpassword operation without the processor  
> usage of Dovecot and is functioning.
> When you perform the tests with dovecot from the logs out these errors:
> 
> 
> auth: Error: checkpassword(plutos,127.0.0.1,<WLcLPkg8esF/AAAB>): Child  
> 15375 died with signal 11
> auth: Error: checkpassword(plutos,127.0.0.1,<WLcLPkg8esF/AAAB>): Child  
> 15376 died with signal 11
> imap-login: Info: Disconnected (auth failed, 2 attempts in 8 secs):  
> user=<plutos>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
> master: Warning: Killed with signal 15 (by pid=15479 uid=0 code=kill)
> 
> or :
> 
> auth: Error: checkpassword(plutos,192.168.1.113,<zzV561I8IuDAqAFx>):  
> Child 15851 died with signal 11
> auth: Error: checkpassword(plutos,192.168.1.113,<zzV561I8IuDAqAFx>):  
> Child 15852 died with signal 11
> imap-login: Info: Disconnected (auth failed, 2 attempts in 8 secs):  
> user=<plutos>, method=PLAIN, rip=192.168.1.113, lip=192.168.1.113,  
> secured
> imap-login: Info: Disconnected: Too many invalid commands (no auth  
> attempts in 102 secs): user=<>, rip=192.168.1.235, lip=192.168.1.113
> auth: Error: checkpassword(plutos,192.168.1.235,<7pLd+FI81uXAqAHr>):  
> Child 15870 died with signal 11
> 
> 
> It is already a long time that we slam but I can not figure out where  
> to make the mistake. Who will help me to solve this problem.
> 
> Thanks in advance for your support.
> 
> Regards

Hi!

Can you provide backtrace from the crash? 

See http://www.dovecot.org/bugreport.html

Aki