Issue Dovecot 2.3 warnings on startup for services auth and anvil

[TimReeves]

I'm just configuring a new vServer with Debian 9.5 / dovecot 2.3.0.1.
When I restart the service I'm seeing:

• dovecot[19544]: master: Warning: service auth { client_limit=1000 } is lower than required under max. load (1224)
• dovecot[19544]: master: Warning: service anvil { client_limit=1000 } is lower than required under max. load (1227)

Sure these are only warnings, but dovecot must have a reason wor issuing the warning. Could the team look at this, please?

BTW I'm also seeing the issues explained here - perhaps that Bug can be extended?

 

[learning_curve]

This Plesk Support Article may help solve your first issue @TimReeves It did fix it when we had the issue

 

[Ksech]

I changed mine to 1500 per that support article. Now my logs say 1500 instead of 1000. Other possible fixes are mentioned by users, but I'm not sure what to do - any advice? I thought about trying a LOWER number as one poster suggested, but thought I'd seek additional advice first before any more tinkering (I'm new to Plesk, and NOT a sys admin - I'm just the lucky web developer who always manages the server too)

FYI this server is used by a small company - other than the occasional botnet hit, we really don't have a lot of traffic or email, and the server is new and has great specs. Here's a bit of my log from today:


Jul 28 15:43:54 1112381-server postfix/postfix-script[16787]: refreshing the Postfix mail system
Jul 28 15:43:54 1112381-server postfix/master[14912]: reload -- version 3.4.8, configuration /etc/postfix
Jul 28 15:43:54 1112381-server postfix/anvil[16516]: statistics: max connection rate 1/60s for (smtpredacted)) at Jul 28 15:42:16
Jul 28 15:43:54 1112381-server postfix/anvil[16516]: statistics: max connection count 1 for (smtpredacted)) at Jul 28 15:42:16
Jul 28 15:43:54 1112381-server postfix/anvil[16516]: statistics: max cache size 5 at Jul 28 15:42:56
Jul 28 15:43:54 1112381-server dovecot: master: Warning: Killed with signal 15 (by pid=16826 uid=0 code=kill)
Jul 28 15:43:54 1112381-server dovecot: service=imap, user=(redacted), ip=[(redacted)]. Server shutting down. rcvd=124, sent=1238
Jul 28 15:43:54 1112381-server dovecot: service=imap, user=(redacted), ip=[(redacted)]. Server shutting down. rcvd=124, sent=1081
Jul 28 15:43:56 1112381-server dovecot: master: Warning: service auth { client_limit=1500 } is lower than required under max. load (2248)
Jul 28 15:43:56 1112381-server dovecot: master: Warning: service anvil { client_limit=1500 } is lower than required under max. load (2251)
Jul 28 15:43:56 1112381-server dovecot: master: Dovecot v2.3.10.1 (a3d0e1171) starting up for imap, pop3, sieve (core dumps disabled)
Jul 28 15:43:56 1112381-server dovecot: config: Warning: service auth { client_limit=1500 } is lower than required under max. load (2248)
Jul 28 15:43:56 1112381-server dovecot: config: Warning: service anvil { client_limit=1500 } is lower than required under max. load (2251)
Jul 28 15:43:56 1112381-server dovecot: master: Warning: Killed with signal 15 (by pid=16885 uid=0 code=kill)
Jul 28 15:43:57 1112381-server dovecot: master: Warning: service auth { client_limit=1500 } is lower than required under max. load (2248)
Jul 28 15:43:57 1112381-server dovecot: master: Warning: service anvil { client_limit=1500 } is lower than required under max. load (2251)
Jul 28 15:43:57 1112381-server dovecot: master: Dovecot v2.3.10.1 (a3d0e1171) starting up for imap, pop3, sieve (core dumps disabled)
Jul 28 15:43:57 1112381-server dovecot: config: Warning: service auth { client_limit=1500 } is lower than required under max. load (2248)
Jul 28 15:43:57 1112381-server dovecot: config: Warning: service anvil { client_limit=1500 } is lower than required under max. load (2251)
Jul 28 15:43:58 1112381-server dovecot: master: Warning: Killed with signal 15 (by pid=17019 uid=0 code=kill)
Jul 28 15:43:59 1112381-server dovecot: master: Warning: service auth { client_limit=1500 } is lower than required under max. load (2248)
Jul 28 15:43:59 1112381-server dovecot: master: Warning: service anvil { client_limit=1500 } is lower than required under max. load (2251)
Jul 28 15:43:59 1112381-server dovecot: master: Dovecot v2.3.10.1 (a3d0e1171) starting up for imap, pop3, sieve (core dumps disabled)
Jul 28 15:43:59 1112381-server dovecot: config: Warning: service auth { client_limit=1500 } is lower than required under max. load (2248)
Jul 28 15:43:59 1112381-server dovecot: config: Warning: service anvil { client_limit=1500 } is lower than required under max. load (2251)
Jul 28 15:43:59 1112381-server dovecot: master: Warning: Killed with signal 15 (by pid=17065 uid=0 code=kill)

 

[learning_curve]

@Ksech If you go to that same article again, but read all of the user comments made on it, some people have the same issue as you, so there are some alternative solutions listed on there.

 

[tkalfaoglu]

I changed it to 65535 no more issues for years LOL

 

[unsuwe0]

I'm just configuring a new vServer with Debian 9.5 / dovecot 2.3.0.1.
When I restart the service I'm seeing:

• dovecot[19544]: master: Warning: service auth { client_limit=1000 } is lower than required under max. load (1224)
• dovecot[19544]: master: Warning: service anvil { client_limit=1000 } is lower than required under max. load (1227)

Sure these are only warnings, but dovecot must have a reason wor issuing the warning. Could the team look at this, please?

BTW I'm also seeing the issues explained here - perhaps that Bug can be extended?

Hi.
I had the same Problem,but with Debian 10.13 /dovecot 2.3.20.
the plesk article dont work.

 

[Peter Debik]

@unsuwe0, What part of the article does not work for you?

 

[unsuwe0]

This Plesk Support Article may help solve your first issue @TimReeves It did fix it when we had the issue

this

 

[Peter Debik]

I understand that you tried the solution from that article, but what is the result? If the limit is too low, it will surely show further errors (just with another threshold value), but in general, that is the correct solution. Did you restart Dovecot after updating the configuration?

 

[unsuwe0]

I haven't read the first word.
I'm looking for the file 10-master.conf
sorry.

 

[BaileyPayner]

I'm just configuring a new vServer with Debian 9.5 / dovecot 2.3.0.1.
When I restart the service I'm seeing:

• dovecot[19544]: master: Warning: service auth { client_limit=1000 } is lower than required under max. load (1224)
• dovecot[19544]: master: Warning: service anvil { client_limit=1000 } is lower than required under max. load (1227)

Sure these are only warnings, but dovecot must have a reason wor issuing the warning. Could the team look at this, please?

BTW I'm also seeing the issues explained here - perhaps that Bug can be extended?

I changed it to 65535 no more issues for years LOL