Date: Thu, 18 Jan 2001 19:17:13 -0500 From: Mike Tancsa <mike@sentex.net> To: Mark.Andrews@nominum.com Cc: Gregory Bond <gnb@itga.com.au>, Christopher Schulte <christopher@schulte.org>, stable@freebsd.org Subject: Re: Weird sporadic DNS resolution problems Message-ID: <4.2.2.20010118190909.0387fa10@marble.sentex.net> In-Reply-To: <200101182329.f0INTGF67162@drugs.dv.isc.org> References: <Your message of "Thu, 18 Jan 2001 07:47:07 CDT." <4.2.2.20010118074255.01fc96e8@marble.sentex.net>
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At 10:29 AM 1/19/2001 +1100, Mark.Andrews@nominum.com wrote:
> This is a *human* problem not a software problem.
Yes and no. Yes, its a human problem... My problem in that our support
staff get hit with "Why cant I email my <insert anyone from Aunt Mable to
large global conglomerate who could not possibly have bad DNS entries> when
<insert customer at competitors> can."... So yeah, its my problem. It
would be lovely in a perfect world if people cleaned up their DNS. But
some people dont know how, some people have made honest mistakes. Either
way, its pretty well a pointless exercise try to explain to the end user
what a LAME delegation is.
Its a software problem in that it has yet to be documented or I have yet to
find the documentation, explaining when this behavior has changed. Someone
mentioned that it started happening between P5 and P7 of BIND which sounds
plausible. But there were also sendmail changes during that period as well,
and the tuneable in sendmail
# name resolver options
#O ResolverOptions=+AAONLY
does not seem to have any affect. I cc'd the FreeBSD sendmail maintainer a
while back for his opinion, but have yet to hear from him.
---Mike
--------------------------------------------------------------------
Mike Tancsa, tel +1 519 651 3400
Network Administration, mike@sentex.net
Sentex Communications www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike
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