Working through what appears to be a permissions sync issue. We're using EV6.0 SP3 (recent, clean install) and Exchange 2003 SP2 (no hotfixes that change the build number installed).
If a user delegates access to their mailbox to another user, those permissions are never synchonized with the EV Archive. The other user can open the delegated mailbox in Outlook and play around, but cannot access archived items. Archive Explorer and Search don't show the delegated mailbox archive as a target for searching.
Checking permissions on the EV Archive after a sync shows that the delegated permissions haven't flowed through.
If we change the mailbox permissions explicitly in AD, those permissions do show up on the Archive after the next sync.
Sync Folders is enabled on the policy. Inherited Permissions is off (we tried with it on, but the delegated permissions still did not show, although the inherited permissions did show as expected).
This happens in the production environment as well as dev (which is a duplicate of prod).
Is this a setting I'm missing? Maybe a permissions issue for the EV Service account (although no errors are logged anywhere I can find)? Or an issue with Exchange not syncing to AD?