We have a multi site setup currently based around Exchange 2003, but we are getting a lot of traffic over the vpn as only one server has an internet facing IP.

Is there such a product that could sit on a hosted rack somewhere that would look at an incoming email and from information in AD determine which mail server to relay the message to?


Yes, doable. But you will have to upgrade to Exchange 2010 - seriously. 2007 / 2010 are all about distributed storage architectures, having a mail procesing backbone, distributed storage etc.

  • We are actually just looking to move to Exchange 2007 :( Typical! – Mark Robinson Apr 20 '10 at 13:45
  • Good enough - 2007 did introduce the new architecture and it is a HUGH step. Distributing mailboxes is "just natural" with 2007 upward. – TomTom Apr 20 '10 at 15:04

Sendmail is able to do this with the LDAP Routing feature.

  • +1 mailRoutingAddress looks to be quite interesting, this has opened up a lot more search possibilites, thanks – Mark Robinson Apr 20 '10 at 13:42

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