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From: Wietse Venema (wietseporcupine.org)
Date: Thu Sep 27 2001 - 10:17:57 CDT

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    William Yodlowsky:
    > On Thursday, September 27, Liviu Daia wrote:
    > >
    > > - install a caching DNS on the SAME machine as the mail server, a nearby
    > > one is not good enough; use djbdns for that instead of bind; turn off
    > > logging for lookups, and give it plenty of memory to keep the cache;
    >
    > Would a Solaris box be able to do this without third party software if
    > nscd's hosts cache was cranked up? Anyone ever try it?

    The Postfix SMTP client does not use the native naming service
    (gethostbyname/addr()), and therefore does not go through the nscd
    service (unless you turned off DNS lookups, of course).

    The Postfix SMTP server always uses gethostbyname/addr() for looking
    up the SMTP client hostname, and thus goes through the nscd service.

            Wietse
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