troubleshooting Question

RDNS Failed on emails sent using a mail sender from client machines

Avatar of Clement P
Clement PFlag for United Kingdom of Great Britain and Northern Ireland asked on
Email ClientsExchangeWindows Server 2003
4 Comments1 Solution1098 ViewsLast Modified:
Hi,
We use exchange server 2003 to send our emails, and the same is configured to use a message labs as a smart host.

Emails are going fine when they are sent from outlook (connected to exchange server), however when we use a mailing software from client machines we get RDNS failed error on the emails.

"
Received: from web.domain.com ([192.168.10.22] RDNS failed) by domain.com with Microsoft SMTPSVC(6.0.3790.4675); Mon, 13 Feb 2012 11:25:37 +0000
From: "Test User" <test.user@domain.com> "

And a bit about our DNS Settings,
our mail server internal ip is 192.168.10.2
external ip for the mail server has rdns as mail2.domain.com
Our browsing IP has RDNS as web.domain.com

How do i get the RDNS failed sorted with our settings as above??

Many thanks for your help
R
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