And Exchange 2007 has never been on the network? The must be something
published on that address otherwise you don't get a certificate error either
(it means their has been a connection).

Check if it has been set as a policy in;
HKEY_CURRENT_USER\Software\Policies\Microsoft\Offi ce\12.0\Outlook\AutoDiscover
Value name: ZeroConfigExchange
Value type: REG_DWORD
Value data: 1

Or manually in
HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\O utlook\AutoDiscover
Value name: ZeroConfigExchange
Value type: REG_DWORD
Value data: 1

--
Robert Sparnaaij [MVP-Outlook]
Coauthor, Configuring Microsoft Outlook 2003
http://www.howto-outlook.com/
Outlook FAQ, HowTo, Downloads, Add-Ins and more

http://www.msoutlook.info/
Real World Questions, Real World Answers

-----

"Bob L." Bob wrote in message
...
We have started installing Outlook 2007 on a small network with Exchange
2003. We are starting to get certificate warnings about
autodiscover.mydomain.com, but we simply want to stop Outlook from
autodiscovering anything. How do we turn this off?

Autodiscover seems to be largely a waste in our case. Not only are we are
more than capable of typing in the server name (quicker than setting up or
troubleshooting autodiscover), but Outlook is trying to "discover" when
the
user's account is already established - no need to discover anything.