Postfix SASL authentication does not work with Dovecot SASL in default configuration

[Michael Marley]

Binary package hint: postfix

I am attempting to set up Postfix with SASL authentication on a server with 9.10. I have installed the dovecot-postfix package, and both incoming and outgoing email work. However, I cannot get SASL authentication to work. The /etc/postfix/main.cf file shows that Dovecot SASL authentication should be enabled, but when I telnet in and do a "ehlo", this is all I get:

michael@mamarley-laptop:~$ telnet mail.michaelmarley.com 25
Trying 66.26.248.238...
Connected to thefirstm.dyndns.org.
Escape character is '^]'.
220 michaelmarley.com ESMTP Postfix (Ubuntu)
ehlo michaelmarley.com
250-michaelmarley.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN

Nothing about "AUTH" appears, and sending the "AUTH" command results in:

503 5.5.1 Error: authentication not enabled

Other than this error, there is no other indication of the failure in any of the logs. I have posted my /etc/postfix/main.cf file. If you need any others, please tell me.

[Scott Kitterman (kitterman)]

smtpd_tls_auth_only = yes means it will only offer auth if you connect vial TLS (which you aren't doing when you telnet) so it is correct to not offer it.