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Old 03-28-2015, 02:52 PM   #1
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One domain with 2 mail servers

Can i have a domain configured to use office 365 on the cloud ( no on-premises exchange server) configured and at the same time have postfix email server ( physical machine) in the network.would like to have important users to use office 365 on the cloud and the rest to use postfix. I would want to protect my emails from spam by using email security product/gateway .is this setup possible and has anyone tried this .
Old 03-29-2015, 01:49 AM   #2
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Set up two mail domains is probably the easiest answer. <--Postfix <--- Office 365

The MBAs will probably give you a bonus just based on the use of the word "Overlords" in their email addresses...
On the other hand, stay out of the break room.
Old 03-31-2015, 03:39 PM   #3
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I don't know of any easy way to have two different platforms answering for one domain but check out the following link. If you are not married to the idea of running your own postfix server I see that Rackspace provides exactly what you are looking for with their hybrid mail service.

Old 04-05-2015, 07:23 AM   #4
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You can route email via the exchange online system to your own server, the product is Exchange Online Protection and has a fee though much smaller than that for a regular mailbox.

EOP of course then gives you the spam protection service that you need.


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