Okay, thanks. The next time I run into one that I can duplicate the error with, I'll post about it again. ________________________________ From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxx] Sent: Wednesday, March 16, 2005 09:54 To: [ISAserver.org Discussion List] Subject: [isalist] RE: ISAserver.org - Review of SurfControl Web Filter 5.0 for ISA Server 2004 http://www.ISAserver.org Hi Dan, There might be a number of reasons, but I'm suspecting those are servers you're communicating with that have problems with authenticating proxies in the path. Sort of like the Hotmail/MSN and Windows Update issue. HTH, Tom www.isaserver.org/shinder <http://www.isaserver.org/shinder> Tom and Deb Shinder's Configuring ISA Server 2004 http://tinyurl.com/3xqb7 <http://tinyurl.com/3xqb7> MVP -- ISA Firewalls