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Date:      Thu, 9 Jul 1998 16:49:35 +0930
From:      Greg Lehey <grog@lemis.com>
To:        NOC-IPAD <sysadmin@greeves.mfn.org>, "'freebsd-questions@freebsd.org'" <freebsd-questions@FreeBSD.ORG>
Subject:   Re: named/sendmail Guru Question...
Message-ID:  <19980709164935.S15625@freebie.lemis.com>
In-Reply-To: <01BDAAFE.545873E0@noc.mfn.org>; from NOC-IPAD on Thu, Jul 09, 1998 at 05:56:20AM -0500
References:  <01BDAAFE.545873E0@noc.mfn.org>

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On Thursday,  9 July 1998 at  5:56:20 -0500, NOC-IPAD wrote:
> The original message was received at Wed, 8 Jul 1998 00:35:00 -0400 (EDT)
> from root@localhost
>
>    ----- The following addresses had permanent fatal errors -----
> sysadmin@mfn.org
> A question for the named/sendmail gurus present:
>
> Beginning with our coversion from NT name services to bind (as
> distributed with 2.2.5R), we have had a problem with some (very
> few actually) domains attempting to mail us - AOL is the worst
> of the problems.  All outgoing mail is ok, as is local mail, and
> incoming from almost everywhere, but...
>
> We found a way to stop this problem, but it is not RFC1700
> compliant: by adding a dns record,
>
> 	mfn.org.    IN CNAME greeves.mfn.org
>
> (greeves is our mail hub) the problem disappears, but so does the
> ability to maintain secondary bind servers

I don't understand what you're trying to say here.  Looking from here,
mfn.org has an SOA record (which it needs) and an MX record (which it
also needs).  Are you saying that mail doesn't get to you under these
constellations?  And why should this record stop you from running a
backup name server?

It works fine for me:

Jul  9 16:34:32 freebie sendmail[13326]: QAA13326: from=grog, size=51, class=0, pri=30051, nrcpts=1, msgid=<199807090704.QAA13326@freebie.lemis.com>, relay=grog@localhost
Jul  9 16:34:33 allegro sendmail[22189]: QAA22189: from=<sysadmin@mfn.org>, size=6948, class=0, pri=36948, nrcpts=1, msgid=<01BDAB07.AEDA6130@noc.mfn.org>, proto=ESMTP, relay=greeves.mfn.org [204.238.179.3]
Jul  9 16:34:35 allegro sendmail[22190]: QAA22189: to=<grog@lemis.com>, delay=00:00:07, xdelay=00:00:02, mailer=local, stat=Sent
Jul  9 16:34:40 freebie sendmail[13328]: QAA13326: to=sysadmin@mfn.org, ctladdr=grog (1004/1000), delay=00:00:08, xdelay=00:00:08, mailer=esmtp, relay=greeves.mfn.org. [204.238.179.3], stat=Sent (CAA01839 Message accepted for delivery)

Amusingly, the two lines in the middle are a message from you coming
in.

> (we already filed GNATS on it).

What's the PR number?

> 	Does anybody know what to do about this?  And, are we
> the only ones who have this problem?

I don't know of anybody else.

> Attached is a perfectly typical header from tonights batch of notices...
>
>   ----- Transcript of session follows -----
> 550 sysadmin@mfn.org... Host unknown (Name server: mfn.org: no data known)
>
>    ----- Original message follows -----
>
> Received: from CrystalRun@aol.com
> 	by imo16.mx.aol.com (IMOv14_b1.1) id FJYNa27696
> 	for <sysadmin@mfn.org>; Wed, 8 Jul 1998 00:35:00 -0400 (EDT)
> From: <CrystalRun@aol.com>

This looks like aol can't find your name server records.  This could
be a problem with them, or a problem they have with your stated DNS
servers:

> === grog@freebie (/dev/ttyp3) ~/src 38 -> whois mfn.org
>
> Registrant:
> Missouri FreeNet (MFN5-DOM)
>   Box 775544
>   St. Louis, MO 63177
>
>   Domain Name: MFN.ORG
>
>   Administrative Contact, Technical Contact, Zone Contact:
>      Terranson, Alif  (AT144)  sneakers@MO.NET
>      (314) 995-1180
>   Billing Contact:
>      Contact, Billing  (BC4773)  billing@MFN.ORG
>      (314) 776-2543
>
>   Record last updated on 05-Dec-97.
>   Record created on 16-Oct-97.
>   Database last updated on 8-Jul-98 04:04:12 EDT.
>
>   Domain servers in listed order:
>
>   NS1.MFN.ORG                  204.238.179.6
>   NS2.MFN.ORG                  204.238.179.201
>
> === grog@freebie (/dev/ttyp3) ~/src 39 -> nslookup
> Default Server:  localhost.lemis.com
> Address:  127.0.0.1
>
>> server NS1.MFN.ORG
> Default Server:  NS1.MFN.ORG
> Address:  204.238.179.6
>
>> set type=mx
>> mfn.org
> Server:  NS1.MFN.ORG
> Address:  204.238.179.6
>
> mfn.org preference = 10, mail exchanger = greeves.mfn.org
> mfn.org nameserver = ns1.mfn.org
> mfn.org nameserver = ns2.mfn.org
> greeves.mfn.org internet address = 204.238.179.3
> ns1.mfn.org     internet address = 204.238.179.6
> ns2.mfn.org     internet address = 204.238.179.201
>> server ns2.mfn.org
> Default Server:  ns2.mfn.org
> Address:  204.238.179.201
>
>> mfn.org
> Server:  ns2.mfn.org
> Address:  204.238.179.201
>
> *** Request to ns2.mfn.org timed-out

They *should* try both name servers, but there's a good chance that
they just time out.  I'd recommend getting your name server fixed, and
that will probably solve the mail problem.

--
See complete headers for address and phone numbers
finger grog@lemis.com for PGP public key

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