Address Rewriting In Exchange 2007…

Address Rewriting is a feature that is supported only in 2007 Edge servers. It is the process of rewriting the sender address with one of your choice. It is extremely helpful in merger situations when two companies which has their own email domains want to send emails from a third common email domain. Though it is possible to find out the true origin of the email, most of the header information are rewritten except the Received and Message-ID headers. These are not readily visible for the recipients and hence the address rewrite does work.

Address Rewriting is achieved using two transport agents, Address Rewriting Inbound Agent and Address Rewriting Outbound Agent. First step is to make sure that these agents are enabled. To do so, run the command Get-TransportAgent on the edge server.

If the agents are not already enabled, enable it by running Enable-TransportAgent –identity “Address Rewriting Inbound Agent” and Enable-TransportAgent –identity “Address Rewriting Outbound Agent”. Once the agents are enabled, you can configure the address rewrite using the New-AddressRewriteEntry cmdlet.

In order to change the address of all emails from @theucguy.net to @rajith.com, run the command New-AddressRewriteEntry –Name HEWtoRajith -InternalAddress theucguy.net –ExternalAddress rajith.com

Restart the Exchange Transport Service if it doesn’t work straightaway. You can have more than one address rewrite entries and can even rewrite a single address like rajith@theucguy.net to rajith@rajith.com, by replacing the domain name with the email address in the New-AddressRewrite cmdlet.