If autodiscover is available only with Outlook 07+ exch 2007, how about exchange 2003?Which leads me to my main question...an employee visited a client's office and while retrieving email with Outlook 2007 to our exchange 2003 server the employee received a pop up prompting to download "autodiscover.domain.com" The employee clicked no because it was unfamilar to the users.So is it possible for a user with only Outlook 2007 that connects to an exchange srv 2003 to be configured for autodiscover service?It hasn't reoccurred but the employee has been in the main office since then. However the employee will return to the location a few more times.I'm just trying to figure out why it prompted the employee to download it when we don't have exchange 2007..and thought to share?

Not in our company but possibly atthe clients.

I understand now, the challenge is trying to tell users without them asking more WHY WHY WHY questions. Thanks for all the replies!!!

Autodiscover keeps popping up for user using exchange 2003 mailbox. We have two enviornment at the moment one exchange 2003 and another one is exchange 2010. Is there any solution to stop this message on users laptop. Thanks SatishNeed to know