I was trying to configuring a second front-end for NLB. Tried to configure Integrated authentication but ended up in mess. Now - I am getting the login page I am able to login successfully I am able to view the mails through web-access - on the reading pane. The only problem I see here is while double clicking on a mail, the new windows comes up and redirect to the login page. OWA in basic mode works fine as the new mail open on the same page. Your help appreciated. Shaba

Hi, I this that Front-end are supported with integrated authentication, have a look into this article : http://technet.microsoft.com/en-us/library/bb125207(EXCHG.80).aspx , it says : Exchange Server 2003 back-end servers support forms-based, Basic, Integrated Windows, and Digest authentication. Exchange Server 2003 front-end servers do not support Integrated Windows or Digest authentication. Ripu Daman Mina | MCSE 2003 & MCSA Messaging