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office 365 to connect to on-premise exchange server

Posted on 2014-02-04
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Is it possible to connect office 365, specifically Outlook to on-premise exchange server, not migrating the whole exchange server to cloud? I want to see how office 365 works with a couple of testing accounts. If it is, does it connect to exchange server 2003?
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Question by:crcsupport
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by:Vasil Michev (MVP)
Vasil Michev (MVP) earned 1000 total points
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Can you be a bit more specific here? Office 365 is a collection of services, which includes both Exchange and Office applications. So, are you planning on purchasing testing Outlook 2013 and testing it with your on-prem Exchange server? Or, are you planning of creating few mailboxes in the cloud and gradually migrating your on-prem mailboxes to Office 365?
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by:crcsupport
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I'm almost zero knowledge of office 365.
What I wanted to know was, if it's possible to subscribe to office 365 and connect outlook 365 to our on-premise exchange server 2003, not migrating mailbox to it.
I read that office 2013 has compatibility issue with exchange 2003. So I thought if outlook 365 is the same.
Also, another question not related to the original question, when migrating mailbox from exchange 2003 to office 265, does office 365 allow me to move only a couple of mailboxes to its cloud not migrating the entire exchange server to it? In other words, can I have mailboxes of some users migrated to office 365 and keep mailboxes of other users in our on-premise exchange server?
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by:Simon Butler (Sembee)
Simon Butler (Sembee) earned 500 total points
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Office365 is basically Exchange 2013, so there are no problems with Outlook 2013 with Office365. However Exchange 2003 is too old for coexistence, so you would have to basically operate them as two separate environments and go through the headaches of sharing the SMTP address space.

Simon.
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Vasil Michev (MVP) earned 1000 total points
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You can move mailboxes in batches, and there are several options for this in general. As Simon mentioned however, E2003 is too old and you only have one option that fits your requirements, namely the so-called staged migration.

You will need however to have dirsync up and running to take advantage of it. There are also some other prerequisites, so make sure to review this article:

http://help.outlook.com/en-us/140/Ff959224.aspx

Read about the different types of migration:

http://help.outlook.com/en-us/140/538c48ad-4a3d-4777-be1b-7fc533ca45eb#migrationmatrix

You can also consider IMAP migration, although it's not really recommended usually, as it has some severe limitations. Another alternative is to simply export the PSTs and import them into O365, there is even a tool called PSTCapture to help you in the process.
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by:Jeffrey Kane - TechSoEasy
Jeffrey Kane - TechSoEasy earned 500 total points
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Yes, just go to this site to test in your environment:
http://fasttrack.office.com/

Then click on PILOT to get started.

Jeff
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by:Jeffrey Kane - TechSoEasy
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I want to see how office 365 works with a couple of testing accounts.

Strange... my response was the only one that answered your question directly and you split the points?
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