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Shared namespace and Office365

Posted on 2016-11-04
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Last Modified: 2016-11-14
Want to migrate some of a customer's mailboxes (POP/IMAP) to Office365.  Initially, we would migrate 5 users.  Have read that this is possible, but not sure how to execute.  Do you need an Exchange server to relay to Office365 or can you relay back to the POP provider from Office365?  

Any comments, suggestions or how-to's would be greatly appreciated!
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Question by:Webcc
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Todd Nelson earned 250 total points
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You would need to create some sort of forwarding so as a message comes into a mailbox in the pop/imap service it can forward to a mailbox in Exchange Online.

It will depend on what your pop/imap service host is capable of.
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by:Vasil Michev (MVP)
Vasil Michev (MVP) earned 250 total points
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Just to add the 'official' guidance Microsoft had on this (now only available via the wayback machine): https://web.archive.org/web/20150429002219/http://community.office365.com/en-us/w/exchange/786.simple-domain-sharing-for-smtp-email-addresses.aspx
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