mailbox changed but still visable

we migrated exchange several times the last few years to the latest version now 2013 exchange, but still some old problems appear, like mailboxes / accounts that were renamed long ago, because of new employees took over a job and accounts were cleaned and renamed to the new user/employee name, still somewhere the old name pop up for example in webmail sometimes, HOW DO WE get this out, were it is stored in exchanges these names ??
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Adam FarageEnterprise ArchCommented:
HOW DO WE get this out, were it is stored in exchanges these names ??

In OWA it queries the GAL (Global Address List), which is stored within Active Directory and for Outlook it is within the Offline Address Book.

If you are looking at OWA and see that changes are not showing up properly, this is most likely because active directory replication has yet to complete. I would check replication and the health of the domain controllers (DCDIAG /TESTALL and REPADMIN /SHOWREPL) along with your replication cycles.

If you are looking at Outlook and see the changes are not showing properly, this is because of OAB Regeneration. The OAB Regeneration process is pretty IO intensive, along with CPU intensive. Because of this it only runs once a day after hours (I believe its around 2AM by default). The next day clients would restart Outlook and when AutoDiscover completes it will then look at the OAB Deltas on the server, and since it wont match up it will then simply download the new OAB.

You can manually update the offline address book by running the following command:


Open in new window

In addition, you can force an OAB download on the outlook client by doing the following:

Send Receive (tab) > Send / Receive Groups > Download Offline Address Book...

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