How to obtain the hotfix
This issue is fixed in the Outlook 2007 Hotfix Package 939184. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
939184 Description of the update rollup for Outlook 2007: June 27, 2007
The AutoDiscover service will now use DNS Service Location (SRV) records to locate the appropriate AutoDiscover URL.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
940881
A new feature is available that enables Outlook 2007 to use DNS Service Location (SRV) records to locate the Exchange AutoDiscover service