Receiving multiple domains without a recipient policy
Posted on 2006-06-08
Hi all. I have a client that has a non-standard configuration and I am not sure how it is working. The admins are non-english speaking and I dont have access to their systems to dig in myself. The client has multiple sub companies but is using one Active Directory and Exchange organization. For the majority of their smtp domains they are receiving mail for, they have typical recipient policies created. But for a few domains, there is no entry anywhere in any recipient policy for these few domains. They are rather using a couple relay servers running Free BSD to relay mail into specific Exchange servers.
My question is, how is Exchange accepting and not rejecting mail coming in that is not configured in a recipient Policy? I have been using Exchange 2000/2003 for 6 years now and I was not aware and cannot find any documentation on the Internet to support this configuration they have, how to receive incoming mail without setting up recipient policies to instruct Exchange that it is athoritative to receive mail for these domains and not reject it.
I have asked the admins for clarification but they keep responding that they dont want recipient policies and dont need them. They manually create the entries on the user accounts and are insisting to me that this is the ONLY reason they would need recipient policies, to automatically stamp the addresses. I however understand and know this is not the case. I would like to properly instruct them the correct way to configure Exchange but it is working they way they have it already and I would like to understand how before I can make solid recommendations to change it.