I have a client that occasionally can not receive emails from my office.
They say that their servers require reverse DNS. I thought we had resolved the issue.
Here is part of the header from email sent through my exchange server to a yahoo account:
Authentication-Results: mta1044.mail.sk1.yahoo.com from=mail.XXXX.com; domainkeys=neutral (no sig); from=mail.XXXX.com; dkim=neutral (no sig)
Received: from 127.0.0.1 (EHLO mail.XXXX.com) (XX.XX.XXX.105)
by mta1044.mail.sk1.yahoo.com with SMTP; Tue, 27 Mar 2012 12:02:47 -0700
X-PMWin-Version: 18.104.22.168, Antivirus-Engine: 3.18.0, Antivirus-Data: 4.64E
when I ping mail.XXXX.com I get XX.XX.XXX.105
TO my mind, reverse DNS is functioning correctly. Am I wrong here?