Comment out smtpd_milters and it fixed for me, not sure what’s up with postfix, I want my qmail back. vi /etc/postfix/main.cf #smtpd_milters = inet:localhost:12768 non_smtpd_milters = inet:localhost:12768 $ postfix stop $ postfix start This entry was posted in PLESK. Bookmark the permalink. Please Post Your Comments & ReviewsYour email address will not be published. Required fields are marked * Save my name, email, and website in this browser for the next time I comment.