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				Originally posted by pixhell  
I don't understand. Is it a problem? 
			
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 re: DNS servers on the same network
It's a problem when you go down, because no one can resolve any of your domain records. This is particularly important for email so that it is queued properly to be resent once the mail servers are reachable again. If a bunch of people try to send email to 
[email protected] right now (or any other sites on those DNS servers) then a portion of them will fail/bounce immediately, rather than being queued for periodic delivery retries.