Re: OpenDKIM isn't signing nor throwing any errors in log

From: Murray S. Kucherawy <>
Date: Sat, 10 Mar 2012 07:43:04 -0800 (PST)

On Sat, 10 Mar 2012, Antony wrote:
> I can confirm that yes, Postfix, somehow disregards the setting in its
> and remains unaware of OpenDKIM
> The test is as simple as setting smtpd_milters & non_smtpd_miltersĀ  to a
> port that is not listening, i.e. inet:
> After restarting the postfix and trying to send out another email. The
> mail.log shows no sign of communication between Postfix & OpenDKIM; hence,
> no errors of what so ever.

You're telling postfix to talk to a port where nothing's listening, so you
should see errors from postfix and no activity from opendkim (as before,
in the latter case).

I'm not a postfix guy so I wouldn't know how to go about debugging or
fixing this. There's a postfix-users list you can reach through, though some of that lot can be a bit sharp with
neophytes. Be warned. :-)

> The second thing I did was to verify that the DNS domain key record matches
> up with my private key. The command below shows no error when I supplied the
> right private key (I also did a negative test by supplying wrong private
> key)
> sudo opendkim-testkey -d -s main -k
> /etc/opendkim/keys/

That's good, but it's a separate issue from whether or not postfix and
opendkim are communicating.

> Thus, it all comes back to Postfix. I know this is not a Postfix support
> group, but if anyone has experience on why Postfix is not reading the
> milter settings, I will appreciate it.

There are indeed postfix users on this list, so maybe one of them can
suggest how to figure out what's going on here. Good luck...

Received on Sat Mar 10 2012 - 15:43:20 PST

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