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can it be possible to have the following topology for exchange:

  1. have a catch all mailbox hosted on the internet
  2. configure exchange (within the internal network) to pop mail from there and route it into user mailbox as per rule

i believe something like this should be possible, would like some confirmation and/or any implementation tips/pitfalls.

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You can do this, but why would you want to? Wouldn't it be better to deliver directly to Exchange and use Exchange rules to handle the catchall? – voretaq7 Nov 28 '12 at 23:53

Yes, that topology is possible with Exchange but you need a "POP3 connector" to download and distribute the emails from the catch-all mailbox. The "Small Business Server" versions of Exchange already come with a POP3 connector but if you're not using SBS you can use any of the available 3rd party connectors. Try POPcon - that's one that just works.

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thanks claus, just one thing to throw into the mix... would adding an edge role in a dmz be possible (and would it add any value) or something like POPCon pro do the job ? – driven4ward Nov 28 '12 at 21:50
An Edge Transport server would do nothing for this situation. – Greenstone Walker Dec 16 '13 at 2:43

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