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ISA blocking External Email

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ISA blocking External Email - 9.Feb.2012 9:46:02 AM   


Posts: 1
Joined: 9.Feb.2012
Status: offline
Hi all,

I'm hoping someone can help me get this issue resolved.
I have an Exchange 2010 Server that's sitting behind ISA 2k6, lets say site 1.

All users from site 1 can send mail external no problem. issue is the mails are not coming in.
When i remove the ISA server mail comes in and goes out without issue, so i know my basic setup is correct.
My access rules on ISA are:

1) Internal--->>> External - Allow ( SMTP and DNS)
2) External--->>> Internal Allow (SMTP and DNS)

Through the course of troubleshooting and frustration I added just about every protocol available but without luck.
My hub transport server is on the edge of my network and ISA is not a member server of my domain..

This is a test environment, hence i had the luxury of removing ISA from the network to confirm basic send and receive both external and internal.

any help would be much appreciated
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