Dynamic CRM config with outlook

Dear All,

I have recently encounter one problem with few of user in my org.  we have Launched  Dynamic CRM project which server are hosted with third pary in Cloud.  When we  are trying to configure CRM with outlook it through the following error  ( the Server URL is not valid )
the remote server returned an error 407 proxy authentication required.
I worked closely with Microsoft support to fix the problem and we have found the problem is at our end with LAN. Because CRM config with outlook over public net work was success full.
We have ISA 2006 server which we are using as proxy server I have all ready created the Exception for required URL.But still when we are trying to config CRM with Outlook it through the Same error.

Please can any expert help me to Fix the problem for error referenceCRM_error.png please see attached.
Asif NaeemSr. System Administrator ( Wintel & UNIX (AIX) Asked:
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.

Feridun KadirPrincipal ConsultantCommented:
Have you seen this article http://blogs.technet.com/b/isablog/archive/2008/07/23/publishing-microsoft-crm-4-0-through-isa-server-2006.aspx? 

Although it is for CRM 4.0, some of the principles should still be relevant.
Asif NaeemSr. System Administrator ( Wintel & UNIX (AIX) Author Commented:
Hi,

I am still looking into it so far no success. I will post update.

Regards
Asif NaeemSr. System Administrator ( Wintel & UNIX (AIX) Author Commented:
Hi,

Final found this is the problem with our proxy server or firewall which is sorted now.

Regards
Asif

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
Asif NaeemSr. System Administrator ( Wintel & UNIX (AIX) Author Commented:
it was internal firewall issue
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
Microsoft Dynamics

From novice to tech pro — start learning today.