Hi Stephan, Are you publishing your DNS server? Thanks! Tom Thomas W Shinder www.isaserver.org/shinder ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp -----Original Message----- From: Stephan Pfoh [mailto:Stephan.Pfoh@xxxxxxxxxxxxxxxxxx] Sent: Thursday, April 17, 2003 5:26 AM To: [ISAserver.org Discussion List] Subject: [isalist] DNS Resolution through ISA Server Some DNS Request does not response true my ISA Server. When I restart my DNS Server it seems to work. But after a laps of time the symptoms restart.