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postfix and dovecot, living together

computers, linux
Nick Gully

If you want to send via a postfix mail server, it will need to conncet to dovecot, on debian this can take a few tweaks to get working.

I found the solution in: http://serverfault.com/questions/383212/sasl-plain-authentication-failed-another-step-is-needed-in-authentication http://ubuntuforums.org/showthread.php?t=1024866

If you see errors like:

Dec 31 22:46:56 machinename postfix/submission/smtpd[3891]: warning: SASL authentication failure: Password verification failed
Dec 31 22:46:56 machinename submission/smtpd[3891]: warning: c-71-229-153-32.hsd1.co.comcast.net[]: SASL PLAIN authentication failed: authentication failure
Dec 31 22:51:05 machinename postfix/submission/smtpd[4039]: warning: SASL: Connect to private/auth failed: No such file or directory
Dec 31 22:51:05 machinename postfix/submission/smtpd[4039]: fatal: no SASL authentication mechanisms

In dovecot: /etc/dovecot/dovecot.conf

#addition for letting postfix use dovecot for send auth
auth default {
    auth_mechanisms = plain login
       passdb pam {
       userdb passwd {
       socket listen {
              client {
                          # Assuming the default Postfix $queue_directory setting
                          path = /var/spool/postfix/private/auth
                          mode = 0660
                          # Assuming the default Postfix user and group
                          user = postfix
                          group = postfix

In postfix: /etc/postfix/main.cf

smtpd_sasl_auth_enable = yes

#ngg this tells us to use dovecot for sasl auth
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_authenticated_header = yes

smtpd_sasl_security_options = noanonymous

Then kick and restart. The dovecot config is older but should work.