Dear Narotam, Try to restart IIS service on your OWA server. Earlier we faced one problem, we add one additional backend server but after that our owa server not authenticating user's on new server, we restart IIS service on frontend server so its worked. you can try this, if you find another solution please let us know. Regards, Sandeep Narotam verma <nlverma@xxxxxxxxx> wrote: http://www.MSExchange.org/ Hi all, I have an Exchange 2000 Outlook Web Access Scenario with a Front-end Back-end server. The front end is in a DMZ and the Back-end is the main Exchange server that services over 400 clients. I was able to run OWA until recently when I had to reinstall SMTP, IIS and Exchange Metabase. After the mentioned activity I resolved my initial problem but now I have a new issue on my hands. I am unable to run my exchange web access either locall on the server or from an external environment. I would really appreciate some help. I have Microsoft Exchange 2000 server with sp4 and exchange 2000 server with latest service pack and patches as back end server and microsoft exchange 2000 with sp3 as front end server in the DMZ. Regards N.L ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: sandeep78610@xxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to info@xxxxxxxxxxxxxx --------------------------------- Yahoo! Mail Use Photomail to share photos without annoying attachments.