I was reconfiguring Postfix to include SpamAssassin, ClamAV and Sieve and somehow I managed to break something 🙂
Emails began to stuck up in queue and /var/log/mail.err was showing:
dovecot: lmtp(5680): Fatal: Error reading configuration: Invalid settings: postmaster_address setting not given
After some research on DuckDuckGo I found the fix:
nano /etc/dovecot/conf.d/20-lmtp.conf
and add
protocol lmtp {
postmaster_address = postmaster@domainname # required
mail_plugins = quota sieve
}
then restart postfix and dovecat and we are back in action again.
Some reference here
