We want to use Google Apps for Domains as our email service but the "corporate" office want's the emails in Exchange. I would like to set up a relay (is that the proper term) to send any incoming mail to both, Google and Exchange. That way, we can use Gmail for our daily communication (both sending & receiving) and the "corporate" people are happy getting a copy of our incoming stuff.

Or is this completely insane? :)


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    You should really engage the corporate folks to work with you on this. By the sound of it, you're not a mail admin? – mfinni Aug 28 '13 at 19:40
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    Agreed with @mfinni. We don't like it, but "Corporate" typically get to decide these sort of things. Setting things up as you propose is going to very quickly turn into a nightmare. While it is certainly possible to use two separate mail systems, it's not pretty, and typically becomes a rat's nest to manage. – EEAA Aug 28 '13 at 19:43
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    Plus, there could easily be legal requirements about retention (and policy requirements about destruction) that you could end up subverting. Don't expose your company to lawsuits without getting all the facts from HR, Legal, and IT, because it will be your butt in the sling for doing this. – mfinni Aug 28 '13 at 19:45
  • Another problem with this approach is that your users' Exchange mailboxes will fill with incoming messages and never be emptied. Also, outgoing messages will not be processed or archived by the corporate systems, if that's a requirement for your corporation. – Jonathan J Aug 28 '13 at 19:57
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    If the corp office wants them in Exchange, why isn't your office using Exchange mailboxes delivered from corporate? Why the need to be separate from what the rest of the company is doing? You sure your IT security dept. is cool with this idea? I would be shocked if they were, since outbound email still isn't routed through Exchange. – TheCleaner Aug 28 '13 at 20:11

It would be (much) easier to do this if you had different SMTP domains but yes, you can create do this. See Receiving routing - Use dual delivery under Routing examples and use cases.

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    Not split delivery - dual delivery. Richard Hurt wants all email copied to Exchange. – mfinni Aug 28 '13 at 19:55
  • And "send routing". – mfinni Aug 28 '13 at 20:17

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