Yes, it is AD integrated. The zones stay, but they're empty of contents after I clear the cache. -----Original Message----- From: Steve Moffat [mailto:steve@xxxxxxxxxx] Sent: Wednesday, March 02, 2005 17:19 To: [ISAserver.org Discussion List] Subject: [isalist] RE: Interesting problem... http://www.ISAserver.org Hi Dan, Do you have an AD integrated DNS system, because as I said, clearing the cache only clears the resolver cache, not the internal Zones. Something seriously wrong there if your zones are disappearing. Steve