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Dns Problems Today


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There is a way to figure out if the problem is DNS or routing:

Make a note of the IP address of your server. Let's say your mailserver address fails because the address is bad (ie DNS problems), immediately switch out the address for the IP number and then try again. If it works then, and you switch back to the address and it doesn't work, then either it's second to second intermittent, or you just proved that it's a dns problem, not a routing problem.


Oh, and same thing with traceroute. Start two traceroutes from the same location at the same time. One with the address, one with the IP number. If the one with the IP number works, guess what, it's not the routing that's the problem.

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