Security warning when you start Outlook 2007 and then connect to a mailbox that is hosted on a server that is running Exchange Server 2007 or Exchange Server 2010

Here is the microsoft article I have followed.  

http://support.microsoft.com/?kbid=940726

This has not fixed the issue.
I have made a few minor changes since then to no avail.

The warning the users are getting is the auto discovery cert is not valid.  As for users attaching from the outside URL I am not worried about.  But it is becomming a nuisance since all of the users are using Outlook 2007 within the network and recieve an error every time they open outlook.

I also read that a multiple domain name cert would need to be purchased to make these go away.   Any information on what I can do to resolve this would be great.

I also have the internal DNS to make it so they can type the extnernal address and access the server.

Https://owa.theranchatrockcreek.com/owa
JoemtAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Alan HardistyCo-OwnerCommented:
For Exchange 2007 / 2010 as you have stated, a multi-name (SAN / UCC) certificate is required for correct operation.
The certificate should include the following names:
mail.yourdomain.com
autodiscover.yourdomain.com
internalservername
internalservername.internaldomain.local
That should resolve your certificate warning.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Shreedhar EtteCommented:
Hi,

Observed that certificate installed on the exchange server not proper.

It shoudl contain the bleow Subject Alternate Names:
autodiscover.theranchatrockcreek.com
owa.theranchatrockcreek.com
exchangeservername e.g exchange
server fqdn e.g. exchange.internaldomain.net

To fix this get 3rd party certificate.

I hope this helps,
Shree
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Exchange

From novice to tech pro — start learning today.