Quote:
Originally Posted by freethought
From my experience, it completely depends on the software doing the DNS lookup. Some software picks one at random and sticks with it, some does it round robin and some just always uses the first server in the list (unless it isn't working).
If a record is returned, that that gets used but if the server returns NXDOMAIN, SERVFAIL or just plain doesn't do anything (timeout) then the next one is used.
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My conclusion from this is if I can't afford two servers to host my websites I am better off specifying one of the nameservers that doesn't exist, than a second one that does exist but doesn't host the site.
Is my conclusion bad?