I currently have two internal Win2K3 DNS servers on my internal network that had been working fine. I tried to upgrade my PIX os from 5.1.2 to 6.3.x but that stopped all traffic. I downgraded to 5.2.9 which allowed at least email to flow in again. The problem is that my internal DNS servers now cannot resolve requests from the outside. If I put in the IP of my IPS' DNS servers on the client, it works. The config has not changed but still does not work. Please help this rookie.
Aug 31 13:43:42 pix %PIX-6-302005: Built UDP connection for faddr 199.191.129.139/4718 gaddr DNS-outside.IP/1066 laddr 192.168.12.11/1066
Aug 31 13:43:43 pix %PIX-6-302005: Built UDP connection for faddr 199.191.144.75/4718 gaddr DNS-outside.IP/1066 laddr 192.168.12.11/1066
Aug 31 13:43:42 pix %PIX-6-302005: Built UDP connection for faddr 199.191.129.139/4718 gaddr DNS-outside.IP/1066 laddr 192.168.12.11/1066
Aug 31 13:43:43 pix %PIX-6-302005: Built UDP connection for faddr 199.191.144.75/4718 gaddr DNS-outside.IP/1066 laddr 192.168.12.11/1066