- Offline Address List(s).
OAL refers to one or more address books managed and maintained by Microsoft Exchange. They are known as "offline" address lists because they are downloaded by Microsoft Outlook and are available to Microsoft Outlook while disconnected from Exchange (provided Outlook is working in cached mode).
For more information see:
- www.cryer.co.uk/brian/msexchange/exch_force_address_book_update.htm - Notes on how to force OAL to update.