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Handing off mail to another machine

Posted on 2004-03-31
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Last Modified: 2010-03-05
... used to have smail running on Unix. Worked fine. Now, new IT 'expert' comes in and installs Exchange to handle mail. Horrible. Plus, who wants to use GUI tools?

So, I'd like Exchange to hand off mail for certain accounts to the old machine without re-writing headers and/or other tampering - is that possible?

'Sysadmin'  tell me that all he can do is 'forward' mail to a specified account - which may or may not make it to the old machine - depending upon how unhappy Exchange is today. The infrastucture is an a shambles. :-(
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Question by:awacs0
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by:timiano
ID: 10725969
Hi,

You don't mention what version of Exchange?  Also, when you say you want to move it to the old machine, are these using a separate domain name space, with a separate MX for the domain?  If so, it should be as easy as going into AD Users and Computers, Create a contact for the onward email address, then find the user, Right-Click Properties, Exchange General, Delivery Options, and Forward to, and Browse for the contact you just created.  The smtp server will do the rest.

If you just want select users mail to forward to a separate mailbox, but still occupy the same domain name, you're in a whole world of poop, as it can't be done as far as I'm aware, without creating an event sync at the SMTP level.

Timiano
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by:awacs0
ID: 10726381
Thanks for your answer, (Mr.?) Timiano.

What version? Dunno, but I'm sure "Mr. Microsoft" has installed the latest and greatest.

Wait: +OK Microsoft Exchange 2000 POP3 server version 6.0.4417.0

Also, I'm kind of chary about forwarded mail - how Exchange rewrites it, etc. Can't it just "bounce" (in the Mutt sense; i.e., remail it unchanged)?

Yes, I would like one or two users to remain on the old server. What I would *really* like would be  split at the MX level (so that Exchange would never see or track my kiddie porn :-); I understand there is no way to do this. Second best would be for Exchange to just hand off the mail to the next machine with as little processing as possible.

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timiano earned 1500 total points
ID: 10727263
Having a think about this, and I suppose you could fudge it (if there is such a term)

At the SMTP virtual server level there is an option to forward mail to another smtp server if recipient lookup is not found.  If you were to make sure that the user being sent to exchange did not exist in AD, it would forward to your other smtp server, which does have that mailbox there (and subsequently enough also hosts the same name space), it would process it as if it were its own regardless of AD, and delivery to what ever mailbox/store you have on the Unix box.

So for instance, you want mail to hardcore.smut@ImAFilthyBugger.com bypassing exchange and going to you Unix Smail smtp server.  You make sure there isn't a user that has said email address, therefore can't be looked up, with the option on the messages tab of the properties of smtp virtual server, to specify 'Forward all mail with unknown recipient to host'... and whack your other mailserver in there unix.ImAFilthyBugger.com, and it will forward the unknown recipient mail to that box, where it will have an account for hardcore.smut.

Thats the only way you are going to do it, which is by my definition is fudged.

Timiano

PS, go easy on Exchange, it is actually a very good mail platform
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