Am 26.02.2013 15:58, schrieb Robert Moskowitz:
> I have recently updated my DNS server and am observing the traffic from my 
> mail server to constantly query for
> names.  Some of these names are frequent requests, for example: 
> zen.spamhaus.org.  So I was thinking that I could
> benefit from running a namecaching setup on my mail server platform.  This 
> would cut down on traffic and time on my
> mail server.
> 
> Is this a practice that is common?  Are there any downsizes to doing this?

virtually anybody with a large mail/connection traffic has a chaching
nameserver on his mailservers running, it is common practice

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