What gives!! apparently my ISA SP1 server has decided that it it dosen't have to forward DNS packets. It stopped on Thursday and a reboot cured it. It has happend again sometime over the weekend. NetMon run on the DNS server would indicate that the DNS server is working properly , its just not recieveing requests from external clients via the ISA server. This was a problem I experienced PRE SP1 and patched successfully. Also it should be noted that my DNS server has begun reporting EVENT ID 5504: DNS Server encountered invalid domain name in packet from <IP address>. Packet is rejected. any ideas are welcome -Jay Mobley