Problems sending mail out

The server is unable to send mail out and my outlook can not create the mailbox present in virtualmin.
This is the log in /var/log/maillog:

Oct 6 17:50:30 server postfix/anvil[5246]: statistics: max cache size 1 at Oct 6 17:46:06
Oct 6 17:50:52 server dovecot: auth: Fatal: Unknown authentication mechanism ‘HASH(0x36fb070)’
Oct 6 17:50:52 server dovecot: master: Error: service(auth): command startup failed, throttling
Oct 6 17:51:52 server dovecot: auth: Fatal: Unknown authentication mechanism ‘HASH(0x36fb070)’
Oct 6 17:51:52 server dovecot: master: Error: service(auth): command startup failed, throttling
Oct 6 17:52:52 server dovecot: auth: Fatal: Unknown authentication mechanism ‘HASH(0x36fb070)’
Oct 6 17:52:52 server dovecot: master: Error: service(auth): command startup failed, throttling
Oct 6 17:53:52 server dovecot: auth: Fatal: Unknown authentication mechanism ‘HASH(0x36fb070)’
Oct 6 17:53:52 server dovecot: master: Error: service(auth): command startup failed, throttling
Oct 6 17:54:52 server dovecot: auth: Fatal: Unknown authentication mechanism ‘HASH(0x36fb070)’
Oct 6 17:54:52 server dovecot: master: Error: service(auth): command startup failed, throttling

What could it be?

Thx ?

Paolo

Howdy,

There was a bug in the Virtualmin installer where, in certain circumstances, it could add an incorrect line into the Dovecot config. And it looks like you hit that bug :slight_smile:

If you log into your server as root, and edit the file “/etc/dovecot/conf.d/10-auth.conf”, look for a line that looks like this:

auth_mechanisms = HASH(0x36fb070) login

Change that line so that it instead looks like this:

auth_mechanisms = plain login

And then restart Dovecot with this command:

/etc/init.d/dovecot restart

After that – try logging in again, and verify that things work for you now.

-Eric