On Mon, 17 Oct 2005, [EMAIL PROTECTED] wrote:
Anyway.. helpful hint: rsync or otherwise mirror your whitelists to a
local nameserver as much as possible, if you handle more than a decent
amount of email. And run a caching nameserver on every mailserver.
The DNS servers in question are local, just another subnet. A local
Then it is not local -- for the services on the mail server :-)
The jammed up IP stack even was causing problems connecting to the CanIt
database server occasionally.
I do not suppose that the stack is jammed awhole, but the queue of the
ethernet card, right? So to use a DNS cache on localhost would definitely
help to keep the IP stack OK.
Actually, I saw a benefit in to have a local DNS cache in the past,
because our mail server had rejected mails even to itself, because it
couldn't verify its own domain via DNS.
Bye,
--
Steffen Kaiser
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