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Reverse Lookup

We are transitioing from Exchange 2003 to 2010.  Incoming mail is coming in on a Trendmicro appliance, but Outgoing mail is flowing through a different IP.   Our PTR record is pointing to our MX record.  Since we installed Exchange 2010 we are now getting lots of mail being refused and getting on blacklists.  Any thoughts?
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Falcon2
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Falcon2
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2 Solutions
 
Suliman Abu KharroubIT Consultant Commented:
"Our PTR record is pointing to our MX record. "

"Outgoing mail is flowing through a different IP"

change you prt record to point to this ip.

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Falcon2Author Commented:
point it to my where the outgoing mail is going?
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Suliman Abu KharroubIT Consultant Commented:
yes please.
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Alan HardistyCommented:
Agree with the above comment - but in addition - if you don't have an A record pointing to the sending IP address, create a new one (e.g., outbound), change your Reverse DNS record (via your ISP) to the new A record outbound.domain.com and then change the SEND Connector on Exchange 2010 to show outbound.domain.com.

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Suliman Abu KharroubIT Consultant Commented:
thanks Alan for addition. that what I am trying to remember :)
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Alan HardistyCommented:
:) - Anytime!
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