So it sounds like DNS is broke, especially if you can ping external IP but not ping yahoo.com for example…check with the ISP to make sure that the DNS hasn’t changed on their end, see if you can ping the dns server itself from one of the machines, you probably wont be able to, i dont know you clients setup as far as the router goes or what kind of router they have, but sounds like the router or server is handing out the wrong DNS or it has changed by the ISP and no one changed it on there end…also you could send email by changed the mail server to its IP and not name, example incoming mail server: mail.duh.com change that to incoming mail server: x.x.x.x then there email would at least work
Discuss This Question: 5  Replies