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.