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I just added domain keys to my sendmail configuration and everything appears to be working. However, upon reviewing the maillog I get a ton of these when an email gets sent or received:

Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue
Oct  4 09:42:44 servername sendmail[22036]: q94GgiGB022036: milter=dkim-filter, action=header, continue

Any clues as to what might be causing this? It's not a huge issue but I'd rather not have that many lines every time one email gets sent out.

1 Answer 1

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+50

dkim-filter has a -l option. If you omit that argument chances are that these log lines will disappear.

Another possible way is installing syslog-ng and using filtering directives you can remove lines before they gets logged. (I like the latter as you can remove other programs meaningless output too.)

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  • Thanks for the reply...I'll look into both options. Is this normal functionality? Do you know why it's logging so many duplicate messages like this?
    – Jeff
    Dec 6, 2012 at 9:05
  • I guess that after each intercepted header you get a log line as the daemon is in verbose mode. I might be wrong as I am not familiar with sendmail, but I use dkim-filter with postfix.
    – cstamas
    Dec 6, 2012 at 22:17

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