Email add response slowly

[phamduykien]

Hi
When I execute the "email add" command the system responds slowly and I see logs with lots of postfix/master messages and dovecot restarts continuously.
Am I doing something wrong or is this how the system works.
Logs:

Oct 26 08:54:39 waxvn postfix/master[61621]: terminating on signal 15
Oct 26 08:54:39 waxvn dovecot: master: Warning: Killed with signal 15 (by pid=7 uid=0 code=kill)
Oct 26 08:54:40 waxvn dovecot: master: Dovecot v2.3.13 (89f716dc2) starting up for imap, lmtp, pop3
Oct 26 08:54:41 waxvn postfix/master[63725]: daemon started -- version 3.5.6, configuration /etc/postfix
Oct 26 08:54:47 waxvn postfix/master[63725]: terminating on signal 15
Oct 26 08:54:47 waxvn dovecot: master: Warning: Killed with signal 15 (by pid=7 uid=0 code=kill)
Oct 26 08:54:48 waxvn dovecot: master: Dovecot v2.3.13 (89f716dc2) starting up for imap, lmtp, pop3
Oct 26 08:54:50 waxvn postfix/master[65823]: daemon started -- version 3.5.6, configuration /etc/postfix
Oct 26 08:54:55 waxvn postfix/master[65823]: terminating on signal 15
Oct 26 08:54:55 waxvn dovecot: master: Warning: Killed with signal 15 (by pid=7 uid=0 code=kill)
Oct 26 08:54:56 waxvn dovecot: master: Dovecot v2.3.13 (89f716dc2) starting up for imap, lmtp, pop3
Oct 26 08:54:58 waxvn postfix/master[67993]: daemon started -- version 3.5.6, configuration /etc/postfix
Oct 26 08:55:03 waxvn postfix/master[67993]: terminating on signal 15
Oct 26 08:55:03 waxvn dovecot: master: Warning: Killed with signal 15 (by pid=7 uid=0 code=kill)
Oct 26 08:55:04 waxvn dovecot: master: Dovecot v2.3.13 (89f716dc2) starting up for imap, lmtp, pop3
Oct 26 08:55:06 waxvn postfix/master[70140]: daemon started -- version 3.5.6, configuration /etc/postfix
Oct 26 08:55:11 waxvn postfix/master[70140]: terminating on signal 15
Oct 26 08:55:11 waxvn dovecot: master: Warning: Killed with signal 15 (by pid=7 uid=0 code=kill)
Oct 26 08:55:13 waxvn dovecot: master: Dovecot v2.3.13 (89f716dc2) starting up for imap, lmtp, pop3
Oct 26 08:55:14 waxvn postfix/master[72319]: daemon started -- version 3.5.6, configuration /etc/postfix
Oct 26 08:55:15 waxvn dovecot: imap-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=172.18.0.1, lip=172.18.0.2, session=<PBvvLuzr7LusEgAB>
Oct 26 08:55:19 waxvn postfix/master[72319]: terminating on signal 15
Oct 26 08:55:20 waxvn dovecot: master: Warning: Killed with signal 15 (by pid=7 uid=0 code=kill)
Oct 26 08:55:21 waxvn dovecot: master: Dovecot v2.3.13 (89f716dc2) starting up for imap, lmtp, pop3
Oct 26 08:55:23 waxvn postfix/master[74521]: daemon started -- version 3.5.6, configuration /etc/postfix
Oct 26 08:55:28 waxvn postfix/master[74521]: terminating on signal 15
Oct 26 08:55:28 waxvn dovecot: master: Warning: Killed with signal 15 (by pid=7 uid=0 code=kill)
Oct 26 08:55:29 waxvn dovecot: master: Dovecot v2.3.13 (89f716dc2) starting up for imap, lmtp, pop3

[polarathene]

Am I doing something wrong or is this how the system works.

That is how it works. At least in earlier releases there was an intentional delay, but AFAIK that's been resolved since.

Now what happens is the command should add the user account to your postfix.accounts.cf file, and then when changes have been detected (within a few seconds), we have a not so great approach, that recreates the accounts for Dovecot (which manages the real accounts) from scratch again, then Postfix and Dovecot restart.

That process once a change is detected (new account(s)) takes around 10-15 seconds usually AFAIK, which is definitely slow. You might add more than one account before the change detection kicks in, otherwise if your next add misses that window, it'll get detected after the first change detection processing is handled, and so forth.

This isn't bad for small amount of users, but it's not ideal for a service that would frequently add new accounts.

[phamduykien]

Thank for answer!