Hi,We are running Exchange 2003 on Windows 2003 Server and use Outlook Web Access through a SharePoint Portal. After a few weeks it just seems to completely stop working i.e. can't access it from anywhere. There are no records in the event viewer or anything to indicate why this might happen. I have tried an IIS Reset and restarting various services including WWW Publishing Service and the Microsoft Exchange System Attendant. The only way we can resolve the issue and access it again is to reboot the Exchange Server, which is not ideal.Any thoughts would be much appreciated.

Hello, I would suggest that you post this in our Exchange forum, as the root cause seems related to the Exchange server. People in that forum have better knowledge on this and they may help you to efficiently resolve the problem. They may also share some useful information with you. http://forums.microsoft.com/TechNet/default.aspx?ForumGroupID=235&SiteID=17 Thank you for your cooperation and I hope this will be resolved soon. Best regards, Chang Yin

Many thanks, I have posted it on the Exchange general discussion forum.http://forums.microsoft.com/technet/ShowPost.aspx?postid=3888153&isthread=true&siteid=17&authhash=8b893cba51c20569e692d068016eb8c7643c8d06&ticks=633572303357654358If anyone can help.