Bug#680476: release-notes: Note for SASL systems upgraded from Squeeze to Wheezy
If a system using SASL authentication via a MySQL database is upgraded from
Squeeze to Wheezy then it will stop working with no clear explanation.
In the configuration file (/etc/postfix/sasl/smtp.conf or equivalent for
other MTAs) the "auxprop_plugin: mysql" line has to be removed and replaced
with the following two lines due to a change in the way SQL plugins are
Also the SQL query needs to have “%u” replaced with “%u@%r” because we now
have user and realm provided separately.