Ex2010 SP2 and migrated mailboxes and delegates

Hi, I've just moved a few maiboxes from Ex2003 SP2 to Ex2010 SP2. We're running OL2003 SP3 on the desktops.

The migrations have run fine with no errors or warnings. However, PAs for the migrated mailboxes can no longer view the mailboxes or calendars in their Outlook\MAPI profile.

I know i can grant full-access to the mailboxes but we don't really want to do this.

Are we doing something wrong or do we need to redo the permissions\delegats post migration? They don't migrate across??

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Hi can you add delegates in outlook for one user and check if that works
kswan_expertAuthor Commented:
can do, but i was wondering if this was a known issue.
Im not sure about this but the way user access calendar information is different in Exchnage 2003 & Exchange 2010

In Exchange 2003 we access information using Public folders but in Exchange 2010 we access using autodiscover.
kswan_expertAuthor Commented:
FYI - this is due to Ex2010 throttling and running OL2003 .  See KB Article ID: 2299468 for fix.

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kswan_expertAuthor Commented:
This is the solution.
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