<div>
Thanks, that did the trick nicely.
</div>


<div>
<div class="content wysiwyg-content">
I'm attempting to do a Small Business Server 2008 migration from SBS 2003. &nbsp;I've got to the section about moving the mailboxes over from the SBS2003 server. &nbsp;When I do it however, a number of mailboxes fail, for two reasons:<br />
<br />
Error occurred in the step: Approving object. Current mailbox size is larger than the limit set on the target Exchange store or the target mailbox. To preserve source mailbox size limit, parameter PreserveMailboxSizeLimit must be set., error code: -1056717336<br />
<br />
Error occurred in the step: Opening source mailbox. Failed to open mailbox with error: ClassFactory cannot supply requested class, error code: -1056749262<br />
<br />
How do I get around these two errors?<br />
<br />
Mark<br />

</div>
</div>


I'm attempting to do a Small Business Server 2008 migration from SBS 2003.  I've got to the section about moving the mailboxes over from the SBS2003 server.  When I do it however, a number of mailboxes fail, for two reasons:

Error occurred in the step: Approving object. Current mailbox size is larger than the limit set on the target Exchange store or the target mailbox. To preserve source mailbox size limit, parameter PreserveMailboxSizeLimit must be set., error code: -1056717336

Error occurred in the step: Opening source mailbox. Failed to open mailbox with error: ClassFactory cannot supply requested class, error code: -1056749262

How do I get around these two errors?

Mark


SBS2008 migration problem for Exchange mailboxes

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).

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.