On my server I have a site setup called isptech.net. the DNS is setup properly, and it uses the co-domain www.isptech.net. However.... At some times www.isptech.net is un-reachable, but isptech.net is. Im not sure what is going on, but it sees like the DNS is going up and down and up and down for some reason. i have 3 DNS Servers Setup, all at seperate Locations on seperate IP's. One of them is lame, but the other two are fully active. and have matching records. can any one help me?