Dovecot LMTP Process Hung

[Miguel Ângelo Santos Pereira]

Hey there guys,

Here's what I found in the logs:

Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x564fff5fcb20
leaked (parent=(nil)): client-common.c:217
Jul 1 08:10:27 tango dovecot: master: Warning: Sent SIGTERM to 1 auth
processes
Jul 1 08:10:27 tango dovecot: master: Warning: Processes aren't dying after
reload, sent SIGTERM to 12 processes.
Jul 1 08:10:27 tango dovecot: pop3-login: Warning: Event 0x5567deff4a00
leaked (parent=(nil)): client-common.c:217
Jul 1 08:10:27 tango dovecot: pop3-login: Warning: Event 0x5562c9058d40
leaked (parent=(nil)): client-common.c:217
Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x5571f845a200
leaked (parent=(nil)): client-common.c:217
Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x5571f84593d0
leaked (parent=(nil)): client-common.c:217
Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x5571f841bf60
leaked (parent=(nil)): client-common.c:217
Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x5571f83f48d0
leaked (parent=(nil)): client-common.c:217
Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x5571f83f4060
leaked (parent=(nil)): client-common.c:217
Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x564fff5fcb20
leaked (parent=(nil)): client-common.c:217
Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x564fff5e0c50
leaked (parent=(nil)): client-common.c:217
Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x564fff5c1c00
leaked (parent=(nil)): client-common.c:217
Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x564fff59f330
leaked (parent=(nil)): client-common.c:217
Jul 1 08:10:27 tango dovecot: imap-login: Warning: Event 0x564fff4db1f0
leaked (parent=(nil)): client-common.c:217
Jul 1 08:09:59 tango dovecot: master: Warning: Sent SIGTERM to 1 stats
processes
Jul 1 08:09:59 tango dovecot: master: Warning: Sent SIGTERM to 1 pop3-login
processes
Jul 1 08:09:59 tango dovecot: master: Warning: Sent SIGTERM to 5 imap
processes
Jul 1 08:09:59 tango dovecot: master: Warning: Sent SIGTERM to 1 imap-login
processes
Jul 1 08:09:59 tango dovecot: master: Warning: Sent SIGTERM to 1 config
processes
Jul 1 08:09:59 tango dovecot: master: Warning: Sent SIGTERM to 1 auth
processes
Jul 1 08:09:59 tango dovecot: master: Warning: Processes aren't dying after
reload, sent SIGTERM to 10 processes.
Jul 1 08:09:59 tango dovecot: stats: Warning: Killed with signal 15 (by
pid=28266 uid=0 code=kill)
Jul 1 08:09:59 tango dovecot: imap: Warning: Killed with signal 15 (by
pid=28266 uid=0 code=kill)
Jul 1 08:09:59 tango dovecot: imap: Warning: Killed with signal 15 (by
pid=28266 uid=0 code=kill)
Jul 1 08:09:59 tango dovecot: imap: Warning: Killed with signal 15 (by
pid=28266 uid=0 code=kill)
Jul 1 08:09:59 tango dovecot: imap: Warning: Killed with signal 15 (by
pid=28266 uid=0 code=kill)

--

We noticed this as the server wouldn't stop overloading, reaching 150+
load, we had to reboot it. It's not the first time we see this, and kill -9
PID wouldn't do anything to the processes, at all.

Any idea guys? We're stuck here.
I've tried to increase the RAM allocation for dovecot, hope it helps.

-- 
*Com os meus melhores cumprimentos,*
*Best Regards,*

*Miguel Ângelo Santos Pereira*
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