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Date:      Wed, 7 Mar 2007 23:40:25 +0100
From:      Buki <dev@null.cz>
To:        Mark Andrews <Mark_Andrews@isc.org>
Cc:        jingmei1992@yahoo.com.cn, freebsd-stable@freebsd.org, Howard Leadmon <howard@leadmon.net>
Subject:   Re: DNS/Bind Error Help under FBSD 6.2 using Sendmail..
Message-ID:  <20070307224025.GC378@dev.null.cz>
In-Reply-To: <200703072124.l27LO7On013727@drugs.dv.isc.org>
References:  <001501c760d2$872a6650$081872cf@Leadmon.local> <200703072124.l27LO7On013727@drugs.dv.isc.org>

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On Thu, Mar 08, 2007 at 08:24:07AM +1100, Mark Andrews wrote:
>=20
> >=20
> > I am seeing an issue with some eMail moving from the server here is one=
 such
> > example:
> >=20
> > l25F3FJW082596    96337 Mon Mar  5 10:03 <bfondak@kpl.com>
> >                  (Deferred: Name server: mail.jingmei.com.: host name l=
ookup
> > f)
> >                                          <order_bj@jingmei.com>
> >                                          <mlin@jingmei.com>
> >=20
> >=20
> > OK, so I did a lookup of it's MX, and get:=20
> >=20
> > jingmei.com mail is handled by 10 mail.jingmei.com
> >=20
> >=20
> > So then I looked up mail.jingmei.com:
> >=20
> > mail.jingmei.com has address 220.112.41.223
> > Host mail.jingmei.com not found: 2(SERVFAIL)
> >=20
> > I see I am getting a returned IP address which can be connected to, but=
 also=20
> > a
> > SERVFAIL error.  =20
> >=20
> > Now I am aware of the AAAA IPv6 issue, and have the needed setting in my
> > sendmail.cf file:
> >=20
> > O ResolverOptions=3DWorkAroundBrokenAAAA
> >=20
> > So I would have hoped this would have worked around the issue and permi=
tted
> > mail flow, yet apparently not for some reason.
> >=20
> > I have googled and looked around, and maybe just not found the right in=
fo yet
> > ,
> > but if anyone has any idea how to track this down, or resolve the issue=
 it
> > would sure be most appreciated. =20
> >=20
> > Most of my mail moves fine, but I have a couple domains I am guessing h=
ave
> > something wrong, so I can't seem to get mail out to them...

Hi,

I'm seeing the same error even on older versions of FreeBSD (thus sendmail).
I also tracked the issue to SERVFAIL response to AAAA request.
According to sendmail docs, the WorkAroundBrokenAAAA option should work as
a workaround, but clearly doesn't. Compiling sendmail with NO_INET6=3Dyes d=
oes.

Setting mailertable entry for (broken) destination domain to relevant IPv4
address should also work (athough not tested).

I haven't searched sendmail archives, but since it's mentioned in the docs =
=2E..

Buki
--=20
PGP public key: http://dev.null.cz/buki.asc

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