On Tue, Jan 04, 2022 at 07:20:43PM -0500, Ken Wright wrote: > My Postfix woes continue. Now I'm getting this error message: > > Jan 4 19:08:47 grace postfix/smtps/smtpd[17286]: fatal: no SASL > authentication mechanisms
The selected SASL backend (Cyrus or Dovecot) is not configured to support any usable SASL mechanisms. http://www.postfix.org/DEBUG_README.html#mail Post (in the body of the message, not a "pastebin") the output of: $ postconf -nf and $ postconf -Mf Make sure the message exactly preserves the original line breaks and is not reformatted to add or remove new lines. With "dovecot" authentication, there should be a socket created by "dovecot" that allows Postfix to interact with its authentication service. Relevant logs from "dovecot" may also be helpful. -- Viktor.