submission-login: Fatal: master: service(submission-login):

[Timo Sirainen]

On 11 Mar 2019, at 13.53, Marcelo Coelho via dovecot <dovecot at dovecot.org> wrote:
> 
> Hi everyone!
> 
> I’m using dovecot 2.3.5. submission-login is crashing many times in a day:
> 
> Here is a sample error message:
> 
> dovecot: submission-login: Fatal: master: service(submission-login): child 34247 killed with signal 11 (core not dumped - https://dovecot.org/bugreport.html#coredumps - set service submission-login { drop_priv_before_exec=yes })
> 
> After I added drop_priv_before_exec, I got these error messages:

If you're using Linux, you could alternatively: sysctl -w fs.suid_dumpable=2

> submission-login: Error: master-service: cannot get filters: net_connect_unix(/var/run/dovecot/config) failed: Permission denied
> dovecot: master: Error: service(submission-login): command startup failed, throttling for 2 secs


This could be avoided with adding to dovecot.conf:

service config {
  unix_listener config {
    mode = 0666
  }
}