Once that’s done, users sign into their own mailboxes and then access the shared mailbox by adding it to their Outlook profile.In Exchange 2003 and earlier, shared mailboxes were just a regular mailbox to which an administrator could grant delegate access.In this mode, a copy of your mailbox is saved on your computer.This copy provides quick access to your data, and it is frequently updated with the server that runs Microsoft Exchange.
Whilst OST repopulation is a pain that many companies have to go through, the Slider feature in Outlook 2013 mitigates against the time taken to populate the OST by allowing the user (or admin, via GPO) to only download the latest month, 3 months, 6 months, 12 months or 24 months of mail – rather than downloading the lot.
I’ve recently had a question from a colleague about solutions for using cached mode with very large (~10GB) shared mailboxes used by large numbers of users.
The problem the organisation is facing came to light after re-installing a number of machines as part of an upgrade to Outlook 2013, after a successful Exchange Online migration.
As a result, users can’t log into it them directly.
To access a shared mailbox, users must first be granted Send As or Full Access permissions to the mailbox.