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Receivng bounce backs and our IP is not blacklisted.

Posted on 2008-06-17
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Last Modified: 2013-12-09
mail362c25.carrierzone.com #550 5.7.1 <JYoung@amici-inc.com>... H:MXB [74.8.77.162] Connection refused due to abuse. Please contact your E-mail provider. ##

Receiving this error message. I think the problem is our "Generating Server", it's listing the local name of the server. When I telnet to the box I get the proper name (mail.medcompnet.com). Where is it getting the local name information from?

This might be a contributing factor as well, not sure. Our RDNS is setup properly. The above report lists our firewall IP address, our RDNS is setup to the mail server IP. The RDNS for the firewall is differnet from the RDNS for the mail server.

Any ideas?

Chris Moughan
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Question by:it_medcomp
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Chris Dent earned 2000 total points
ID: 21835436

Hi Chris,

In Exchange 2007 the SMTP Banner used for the Send and Receive Connectors can be different. Telnet is therefore not always right when it shows you the server name.

The name used when sending is set on the Send Connector under Organisation Configuration / Hub Transport.

The Receive Connector name is set under the Receive Connector in Server Configuration / Hub Transport. They don't have to match though.

Check your Firewall / Router for NAT rules and try to make sure your server is sending out on the correct Address. If you have that setup correctly and a Reverse Lookup Record configured you should be fine.

Let us know how you get on.

Chris
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