It seems the problem was because I am running postfix with chroot so I need to perform this kind of fix: https://serverfault.com/questions/1003885/postfix-in-docker-host-or-domain-name-not-found-dns-and-docker
After this fix, I am getting other errors, but the SASL errors are gone at least. _______________________________________________ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org