Hi Aki!

On Tue, 14 Jun 2016, aki.tuomi@dovecot.fi wrote:

Are you using systemd by chance?

Yes, with the default dovecot.service file provided with 2.2.24:

$ systemctl cat dovecot

/lib/systemd/system/dovecot.service

This file is part of Dovecot

If you want to pass additionally command line options to the dovecot

binary, create the file:

`/etc/systemd/system/dovecot.service.d/service.conf'.

In this file create a Service section and configure an Environment with

the variable `OPTIONS'. For example:

[Service]

Environment='OPTIONS=-p'

In the `Service' section you may also specify various other setting.

If you have trouble with `Too many open files' you may set:

#LimitNOFILE=8192

If you want to allow the Dovecot services to produce core dumps, use:

#LimitCORE=infinity

[Unit] Description=Dovecot IMAP/POP3 email server Documentation=man:dovecot(1) Documentation=http://wiki2.dovecot.org/ After=local-fs.target network.target

[Service] Type=forking ExecStart=/opt/dovecot/sbin/dovecot PIDFile=/var/run/dovecot/master.pid ExecReload=/opt/dovecot/bin/doveadm reload ExecStop=/opt/dovecot/bin/doveadm stop PrivateTmp=true NonBlocking=yes

Enable this if your systemd is new enough to support it:

#ProtectSystem=full

[Install] WantedBy=multi-user.target

/etc/systemd/system/dovecot.service.d/override.conf

[Service] LimitNOFILE=22000

Greetings Roland