Symptoms

Postfix is down and cannot be started.

The following error can be observed in the /usr/local/psa/var/log/maillog :

s16031357 postfix/master[1639]: warning: master_wakeup_timer_event: service qmgr(public/qmgr): Permission denied

Cause

Incorrect permissions are set for postfix files.

Resolution

Fix postfix permissions by running following command:

# postfix set-permissions
# /etc/init.d/postfix restart