SASL LOGIN authentication failed: Invalid authentication mechanism

Question

I always get this error. I got default dovecot and postfix installed. Sending mail from Thunderbird and PHP pear mail works fine but if I the mail server in vbulletin 4 it gives me this error in the mail.log.

Part from my config file.

smtpd_sasl_auth_enable = yes
smtpd_sasl_type = dovecot
smtpd_sasl_security_options = noanonymous
smtpd_sasl_path = private/dovecot-auth
smtpd_sasl_authenticated_header = yes
smtpd_sasl_local_domain = $myhostname
broken_sasl_auth_clients = yes

It also throws this error:

 Client host rejected: Access denied;

Answer 1

Maybe your sasl_path is incorrect.

You can try to add something like

smtpd_sasl_path = /var/spool/postfix/private/auth

to your configuration file.