Date: Sun, 11 Mar 2001 23:49:48 -0500 From: Mike Tancsa <mike@sentex.net> To: Gregory Neil Shapiro <gshapiro@FreeBSD.ORG> Cc: stable@FreeBSD.ORG Subject: Re: DNS related sendmail hangs with 4.3-BETA kernel Message-ID: <4.2.2.20010311234603.02780ca8@marble.sentex.net> In-Reply-To: <15020.19474.360397.772166@horsey.gshapiro.net> References: <Pine.BSF.4.21.0103121130560.1021-100000@prophet.alphaque.com> <XFMail.010311192117.jdp@polstra.com> <Pine.BSF.4.21.0103121130560.1021-100000@prophet.alphaque.com>
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At 08:09 PM 3/11/2001 -0800, Gregory Neil Shapiro wrote:
>Please try again as I really don't think NETINET6 is a problem. It was a
>bug in libc's resolver.
There is however, the issue with some resolvers on the net. A number of
our clients have run into this annoying problem.
---Mike
>Delivered-To: freebsd-stable@freebsd.org
>Date: Mon, 29 Jan 2001 10:33:28 -0800
>From: Gregory Neil Shapiro <gshapiro@FreeBSD.ORG>
>To: Claus Assmann <freebsd+stable@esmtp.org>
>Cc: Mike Atkinson <mikea@kconline.com>, freebsd-stable@FreeBSD.ORG
>Subject: Re: LAME domains, sendmail BIND and FreeBSD- its
>FreeBSDspecific it seems (was more strange DNS issues in BINDand STABLE.)-
>X-Mailer: VM 6.90 under 21.2 (beta42) "Poseidon" XEmacs Lucid
>Sender: owner-freebsd-stable@FreeBSD.ORG
>X-Loop: FreeBSD.ORG
>X-AntiVirus: scanned for viruses by AMaViS 0.2.1 (amavis.org)
>
>ca> 8.12 will most likely have a workaround for this (as usual
>ca> sendmail provides a workaround for almost every broken
>ca> configuration...)
>
>Also, note this from 8.11.2 (to be MFC'ed to RELENG_4 in the near future):
>
> When attempting to canonify a hostname, some broken name servers will
> return SERVFAIL (a temporary failure) on T_AAAA (IPv6) lookups. If you
> want to excuse this behavior, compile sendmail with
> -D_FFR_WORKAROUND_BROKEN_NAMESERVERS. However, instead, we recommend
> catching
> the problem and reporting it to the name server administrator so we can rid
> the world of broken name servers.
>
>You can do this in your FreeBSD build by adding this to /etc/make.conf:
>
>SENDMAIL_CFLAGS=-D_FFR_WORKAROUND_BROKEN_NAMESERVERS
--------------------------------------------------------------------
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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