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I have two sites:

  • HQ

Exchange Roles:

  • HQ: Mailbox Store, Client Access, Hub Transport
  • DATACENTER: Client Access, Hub Transport

Here is the basic mail flow requirements:

Outgoing Email:


Incoming Email:


I've been banging my head on this setting up different Hub Transport rules, etc. Any suggestions?

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What's the path to the datacenter? Is it over the internet? – Jim B Jan 6 '10 at 1:28
The connection was over a VPN. – Eric Hazen Jan 11 '10 at 16:59
up vote 0 down vote accepted

The problem was that our Hub Transport role at the DATACENTER wasn't allowing anonymous access. This prevented me from recieving mail from our spam gateway.

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