If you have any Active Directory users that have been deleted out but the addresses still show up in OWA or if you changed somebody’s user/email attributes and emails bounce back as undeliverable, this article is for you. I found this info here, the entries are stored in the user’s mailbox so the you can only delete them by doing one of the following:
- Delete an entry from the list using OWA
- Login to mailbox via OWA
- Create a new meeting request (Has to be a meeting request only!)
- Begin typing the entry you want to delete until you see it in the Auto Complete list
Continue reading “Exchange 2010 OWA – Remove Cached Email Recipients/Auto Complete Entries”