[100434] in RedHat Linux List
Re: MX secondary, dns and sendmail - what's wrong?
daemon@ATHENA.MIT.EDU (Drew Mouton)
Fri Nov 20 14:09:52 1998
Date: Fri, 20 Nov 1998 13:05:49 -0600
From: Drew Mouton <drew@etool.com>
To: <g.nix@emnet.co.uk>, "Red Hat List" <redhat-list@redhat.com>
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
Lemme see if I can fill in some blanks, and maybe that'll spark an idea.
it appears that around 11/20/98 11:28 AM, Godfrey Nix said:
>Yeah, I fully sympathise. I was messed about by a previous supplier myself.
>
>If you have many sub-domains, not just a single domain, then you will
>be using a file called sendmail.cw
[snip]
>> Two probs: in the cases where I have a user "Drew" on both serverA AND
>> serverB, I'm getting some mail delivered locally on serverB (when it
>> should be forwarded to serverA). Other messages seem to be getting lost
>> altogether.
>>
>> Secondly, some of our domains are being refused altogether by serverB,
>> when they should be forwarded to serverA for local delivery.
Right - but let me clarify. Rem that I have two sendmail servers (A and
B), with dns like this (expanded to show relation of other domains I'm
hosting):
mydomain.com IN MX 10 serverA.mydomain.com;
mydomain.com IN MX 20 serverB.mydomain.com;
yourdomain.com IN MX 10 serverA.mydomain.com;
yourdomain.com IN MX 20 serverB.mydomain.com;
If I take out all the references to serverB, then everything works fine -
which indicates that my sendmail.cw is set up correctly for serverA...and
sendmail.cw for serverB should only have an entry for
serverB.mydomain.com, because it's only allowed to accept mail for itself
(right?).
Both serverA and serverB have a pretty simple alias setup - in other
words, very few. I don't think aliasing is the problem because I've
checked pretty closely.
My guess is that I have two problems - one that causes some mail to be
handled locally on serverB, and another problem that's causing serverB to
bounce domains that we handle, rather than simply relaying to serverA for
local delivery.
Let me start here: can somebody confirm how you setup sendmail to relay
some domains (the domains we host), but to refuse to relay others?
Thx,
Drew
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