Hi Maarten, Apologies - I missed this when I was copying my setup.
I already have these lines in my /etc/postfix.main.cf file. When an e-mail comes in, I'm seeing these lines in the maillog: > Dec 13 20:24:45 mx01 opendkim[27470]: 81942208493E: mail-lf0-f51.google.com > [209.85.215.51] not internal > Dec 13 20:24:45 mx01 opendkim[27470]: 81942208493E: not authenticated > Dec 13 20:24:45 mx01 opendkim[27470]: 81942208493E: DKIM verification > successful So I believe postfix is passing both incoming and outgoing mail via opendkim. It's just my setup isn't adding the 'DKIM' into the outgoing mail. Kent. > On 13/12/2017, at 8:14 PM, Maarten <[email protected]> wrote: > > > Think you are missing something like this in main.cf > > milter_protocol = 2 > smtpd_milters = inet:localhost:8891 > non_smtpd_milters = $smtpd_milters > milter_default_action = accept > > http://www.postfix.org/postconf.5.html#smtpd_milters
