[3603] in linux-net channel archive
Re: MX woes
daemon@ATHENA.MIT.EDU (Matti E Aarnio)
Tue Jul 9 11:39:00 1996
From: Matti E Aarnio <mea@mea.cc.utu.fi>
To: iworrell@caribnet.net (Ian Worrell)
Date: Tue, 9 Jul 1996 11:35:24 +0300 (EET DST)
Cc: linux-net@vger.rutgers.edu, linux-admin@vger.rutgers.edu
In-Reply-To: <m0udFTc-000FUZC@prop> from Ian Worrell at "Jul 8, 96 08:31:00 am"
> I hope some one out there can help!
>
> We are running a site with SMAIL and are trying to set it up to feed a down
> stream host.
>
> So far we have modified the DNS records both the named.boot and the hosts,
> reverse ARP and added a zone file for them, given the down stream host a
> static IP address, registered the name with the NIC.
>
> The down stream host can send mail through us, but we can not get mail to it.
>
> Can anyone tell me if there is alterations to the SMAIL config, and if so
> what they are, as well as where the spool file for the down stream host
> should be held and or what it is called.
You don't give any specific names, thus I have to describe the generic case:
Service providers machine is P (you)
Client system is C (them)
Message senders machine is S (the world)
IF your SMAIL configuration obeys MX pointer information, all you need
is to have following information for the C:
C IN A 1.2.3.4
IN MX 10 C
IN MX 20 P
The priority numbers at the MX entries are important: prio(C) < prio(P)
If your SMAIL does not obey MX pointer information, that is where you
need to focus at its configuring (sorry, I don't use smail, nor sendmail..)
Now if you have heard of wild-card entries at the DNS databases, you
are better off to forget them -- nothing but grief will come from them:
aa.caribnet.net IN A 2.3.4.5
*.caribnet.net IN MX 10 aa.caribnet.net
Some people tend to believe that this form of entry gives all of the
entries at zone caribnet.net also this MX entry, but they are wrong!
The wild-card is used only when no other entry is found, and for the
"aa.caribnet.net" there is an explicite entry --> no magic MX for it.
> TIA - this one is frustrating the heck outa us!
>
> Ian.
> Ian Worrell | http://www.caribnet.net/
> CaribNet | http://magic.caribnet.net/
> Unit 3B, Building 5 | http://classic-card.com/
> Harbour Industrial Estate |
> Bridgetown, Barbados |
/Matti Aarnio <mea@utu.fi>
