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We have Contact objects in Active Directory that are synchronized into Office 365. However, many of these are contacts for users that we have also established an AD account for, meaning we have two objects for many of these people. As we use SharePoint, we need both of these objects to be current (one for the address book, and one for SharePoint).

Exchange Online supports mail users (non-mailbox users), and in Exchange Online, mail contacts can be synchronized from AD contacts, so how do you synchronize a mail user instead of a mail contact? My understanding is that these would be Active Directory users that we just wouldn't license, and I assume we'd set a specific AD property that puts them in mail users instead of mail contacts, but I can't find any documentation about how to do this.

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Why do you need a contact + a normal user again? –  MichelZ Jun 26 '14 at 15:50
I don't! I don't want that at all - I'd prefer to only have a single object to manage rather than two. –  Drew Lanclos Jun 26 '14 at 18:04
@MichelZ Re-reading your question I think maybe you're asking "Why do you need that right now?" - If so, the reason is that I don't get Global Address Book entries published for people that aren't provisioned in Office 365 - that's what the Contact objects are for. But they still need AD accounts for other resources. If I could publish these users as Exchange "mail users", then I wouldn't have this problem. –  Drew Lanclos Jun 26 '14 at 19:27

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