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I have migrated a SBS server Exchange to office 365. All the mailboxes have synced but one of them. I want to do a export to PST but can't do it via outlook . Is there another way of doing this so that I can then export the past to office 365. The mailbox is around 6 GB.
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I have migrated a SBS server Exchange to office 365. All the mailboxes have synced but one of them. I want to do a export to PST but can't do it via outlook . Is there another way of doing this so that I can then export the past to office 365. The mailbox is around 6 GB.

Syncing issue with only one Mailbox on Exchnage 2010 to office 365

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.

Microsoft 365

Small Business Server (SBS) is a line of server operating systems targeted at small businesses by bundling the operating system with a number of other Microsoft products that would normally need to be purchased or licensed separately. The most notable inclusions are Exchange, SQL Server, SharePoint and ISA/TMG (Microsoft's firewall and proxy server).