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PTR Record on Exchange server for reverse DNS

Hello,

This doesn't happen often but I got a bounceback today from a comcast mail account that said this:

#< #5.0.0 smtp; 554 imta04.emeryville.ca.mail.comcast.net comcast 208.43.37.159 Comcast requires that all mail servers must have a PTR record with a valid Reverse DNS entry. Currently your mail server does not fill that requirement. For more information, refer to: http://help.comcast.net/content/faq/PTR> ##

I need to know where to look up this record and how to find out if my mail server is kosher. Other than this I dont have any issues.

Running SBS 2008 R2 with Exchange 07. File server / mail server.

Thank you for your help in advance.

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Papertrip

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luathas

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TimberJon

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Well I checked it out via mxtoolbox but also took a look at the mx records. There really doesn't seem to be anything out of order except one warning when I looked up smtp:(mydomain).

It says: Warning - Reverse DNS does not match SMTP Banner

I went into Exchange and edited the settings to fix this but I don't expect the changes to take so soon.

When retesting, it now says that my server hung up on the test before the banner could be pulled. Im really not sure what is causing that...

TimberJon

ASKER

Thank you for assisting with this. Everything seems to be find though I did not have time to really dig into whether or not my tweaking did anything. Thank you both.