I'm at a loss... a customer is having issues receiving email; they have a wireless network with 4-5 computers. All but 1 are working fine, now. For some reason, this one computer, keeps resolving the mail server name to 126.96.36.199 (A DNS server for PrairieWave Communication?!) I've ran the XP Winsock fix, AVG, AVG Anti-Spyware, SpyBot, AdAware, and the HiJackThis log is clean. Everything is setup correctly. Even after I do a flushdns from the cmd prompt, when I ping the mail server, it resolves to 188.8.131.52 The other machines are working fine. Short of adding entries into the hosts file, what else could I do? I'm very curious as to what could cause this? One of the other computers was previously resolving to this IP, but after disabling AVG Email scanning (I thought this was the culprit), and cleaning it up with AdAware and SpyBot, it started working correctly. What else could cause a computer to resolve a hostname to the wrong IP?