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Using pop3 and Hosted exchange together for same domain

Posted on 2014-04-17
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Last Modified: 2014-06-09
All the users in my organization do not require the robust features hosted exchange provides. Therefor, in order to save $ on those boxes I was wondering if there was a way to configure only some users on the domain (3) to the hosted exchange mailbox and have the rest (10) remain locally as pop3...

Could this be done in the MX record in order of priority?

Priority 0 ----> exchange server
Priority 10 ----> pop3 server

Wondering if a configuration like this would cause some errors or if there was a better way to handle such a task.

Thanks,
Joe
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Question by:jcaprio
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Expert Comment

by:Simon Butler (Sembee)
ID: 40006710
Cannot be done with DNS as DNS is not bound to a user. If a user doesn't exist at the first MX record the sending server will not try the second.

It has to be something that is setup with either hosting provider. It is called sharing the SMTP address space. It is easily done with Exchange, but it depends if the hosting provider will allow you to do it.

A lot of the hosting providers will have the dual option available. I don't think Office365 does, so if you are using someone else, check with them if they offer the service.

The other option would be to use a third party antispam scanning service that provides a per user routing facility. Then you could route the traffic to the relevant service depending on which user it is.

Simon.
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Accepted Solution

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jcaprio earned 0 total points
ID: 40113099
I wound up using 2 domains along with forwarders for the boxes that were not required to be exchange boxes.
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Author Closing Comment

by:jcaprio
ID: 40121526
Thought about a thrifty way to solve this, and did it.
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