Sorry, my initial diagnosis was incorrect. Stefan Foerster: > postfix/submission/smtpd[156]: warning: host or service dovecot:12345 not > found: Name does not resolve > postfix/submission/smtpd[156]: warning: SASL: Connect to Dovecot auth socket > 'inet:dovecot:12345' failed: Address not available
You already have the fix 20220404. That fix changed a fatal error into a warning, and returns an EADDRNOTAVAIL error. > postfix/submission/smtpd[156]: fatal: no SASL authentication mechanisms The server needs to announce the SASL mechanisms in the EHLO response. If it cannot reply to EHLO, then I don't see what good it does if we make this a non-fatal error. Wietse