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On Thu, Mar 24, 2011 at 8:28 AM, Victor Duchovni
> A LAN DNS server with a 2ms lookup delay is fine. Unbound, bind, ...
> does not matter.
Thanks for all the nudges in the right direction. We're now running
Unbound on the same box as Postfix, getting cached responses in 0 msec
from the Postfix box, and 1 msec responses from all other boxes in the
rack. It was as easy as "yum install unbound" and then editing two
lines in the default config file.
We'll test this week with a big mailing to see if the overall delivery
times are noticeably improved.