I've been doing everything the instructions say http://www.postfix.org/MILTER_README.html and I was able to build, configure and run dkim-filter but postfix doesn't seem to call it.

I've got this in my main.cf

milter_default_action = accept
milter_protocol = 2
smtpd_milters = unix:/etc/postfix/dkim-filter.sock

and I set dkim-filter to read from that same file descriptor, no errors anywhere, but I don't get any dkim headers in the mail I send through postfix. Is there something else I have to turn on?

This is on solaris 10. postfix 2.3.20060611

  • I think I just figured out my problem. wikipedia says: Milter support was added to Postfix 2.3.0 released July 12, 2006 I'm a month early. :-(
    – Stu
    Aug 14, 2012 at 20:41
  • okay we upgraded to 2.8 still nothing. Why no love from milter?
    – Stu
    Aug 14, 2012 at 21:20

1 Answer 1


Okay so I got it to answer. I am sending a message via smtp to postfix, yet it only worked when I added the non_smtpd_milters entry to main.cf not just smtpd_milters.

Lesson learned there.

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