TMG 2010 - Autodiscover fails on Exchange 2010

Hi guys,

 I'm having trouble with the autodiscover feature in Exchange 2010, users can't setup Outlook from outside the domain network.

I ran the Microsoft Connectivity Test and it failed:

error1
Our mail server is behind Forefront TMG 2010, but that path is published.

tmg2.PNG
I don`t understand why TMG is blocking connections to that URL if it`s published on the rule.

tmg4.PNG
Any help would be appreciated.

Regards.
Federico CruzAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
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.

Patrick BogersDatacenter platform engineer LindowsCommented:
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
Bruno PACIIT ConsultantCommented:
Hi,

Did you try the "Test Rule" button on the TMG to verify that TMG is able to reach internal server ? What is the result ?
Also, cnayou show us the "To" tab settings, the "Authentication Delegation" tab settings and the "Bridging" tab settings ?

Do you publish also OWA with the smae TMG and does it work ?
0
Jakob DigranesSenior ConsultantCommented:
look at PUBLIC NAME tab for rule. Most likely you've published your rule for webmail.domain.com but with autodiscover it's autodiscover.domain.com

the error message is rather conclusive on this
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
Threat Management Gateway (TMG)

From novice to tech pro — start learning today.