Multiple milters in postfix This is kind of a strange issue, but a lot of blogs report that milter configuration in Postfix can be something like: smtpd_milters = milter1 smtpd_milters = milter2 smtpd_milters = milter3 This is incorrect and will only install milter3 correct syntax: smtpd_milters = milter1,milter2,milter3 |