also edit /etc/postfix/main.cf change the following from smtpd_milters = inet:localhost:8891 non_smtpd_milters = inet:localhost:8891 to smtpd_milters = inet:127.0.0.1:8891 non_smtpd_milters = inet:127.0.0.1:8891 Once these changes are made outgoing emails get properly signed with a DKIM...