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All,<br><br>I am moving our Exchange 2007 to MS365. &nbsp;I have about 8 (out of 300) mailboxes larger than the 100gb limit for E3. &nbsp;In addition the consultants doing the migration have indicated that their max is 92gb (because of overhead).<br><br><br>I can export the mailboxes via PowerShell export-mailbox and I see that it has a date range parameter that will let me export only older info. &nbsp;<br><br>BUT how do I trim the older item from &nbsp;the exchange server mailbox - is there and option in export-mailbox to remove items? I'm not seeing it.<br><br>Is there a better approach? &nbsp;A third party app? &nbsp; <br><br>Also, &nbsp;I need the items to disappear immediately - can setting the retention policy to 0 achieve that?<br><br>Aloha from Hawaii!!<br><br>
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All,
I am moving our Exchange 2007 to MS365.  I have about 8 (out of 300) mailboxes larger than the 100gb limit for E3.  In addition the consultants doing the migration have indicated that their max is 92gb (because of overhead).
I can export the mailboxes via PowerShell export-mailbox and I see that it has a date range parameter that will let me export only older info.  
BUT how do I trim the older item from  the exchange server mailbox - is there and option in export-mailbox to remove items? I'm not seeing it.
Is there a better approach?  A third party app?  
Also,  I need the items to disappear immediately - can setting the retention policy to 0 achieve that?
Aloha from Hawaii!!

Converting to MS365 - Oversized Ex2007 mailboxes - How to truncate?

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.