Hi - I cannot get the Out Of Office assistant working in Outlook 2007.  I am running Exchange 2007.  I have been looking at loads of articles and I think it is a problem with autodiscover. When I run the Test E-Mail Autoconfiguration I'm getting a line in the log: Autodiscover to https://[domain]/autodiscover/autodiscover.xml FAILED (0x800C8203) I have done the following (after reading articles) Checked the certificate is valid (in Exchange Management Shell) - certificates are managed by IIS 6.0 Created a forward lookup zone for autodiscover.[domain].local http://www.informit.com/guides/content.aspx?g=windowsserver&seqNum=249 But still no joy. Anyone have any suggestions? Thanks James ** Update to this ** I have now managed to get OOF working on the client by adding the internal IP and address of Exchange server to the host file.  Sure there must be a more permanent solution however. [/domain][/domain]

Software/Hardware used:
Outlook 2007, Exchange 2007, Windows XP (SP3), IIS 6.0