[100476] in RedHat Linux List
RE: MX secondary, dns and sendmail - what's wrong?
daemon@ATHENA.MIT.EDU (Kenneth Ho)
Fri Nov 20 22:08:35 1998
Reply-To: <macbrush@macbrush.com.hk>
From: "Kenneth Ho" <macbrush@macbrush.com.hk>
To: <redhat-list@redhat.com>
Date: Sat, 21 Nov 1998 11:05:52 +0800
In-Reply-To: <Pine.LNX.4.05.9811201930510.16084-100000@server.moongroup.com>
Resent-From: redhat-list@redhat.com
I am using a box with 5.1/5.2 components mixed together. I am having a
similar headache with sendmail setup. What I need is fairly simple, a backup
server cache all the mail while the main server is down. I was told to do
the following, and I did.
1. Setting up DNS record
doamin.name. MX 10 main.server.
domain.name. MX 50 secondary.server.
2. Put the domain name in main's sendmail.cw and in relay_allow of the
secondary.
3. Test it by relaying mail through secondary server.
I am sure everything was set correctly, so I thought it should works. My
main server was actually down last night, so the secondary answered all
incoming mail traffic, then I've got following error:
The original message was received at Thu, 19 Nov 1998 08:41:52 +0800
from philemon.xc.org [204.31.147.20]
----- The following addresses had permanent fatal errors -----
<macbrush@macbrush.com.hk>
----- Transcript of session follows -----
553 croaky.macbrush.com.hk. config error: mail loops back to me (MX
problem?)
554 <macbrush@macbrush.com.hk>... Local configuration error
I know there is something missing in sendmail config, anyone came across
this problem could shine me a light? I really like to make it works before I
have to consider qmail. Thanks in advance.
Kenneth
*** A clean desk is a sign of a sick mind. ***
-----Original Message-----
From: Chuck Mead [mailto:chuck@moongroup.com]
Sent: 21 November, 1998 8:33 am
To: redhat-list@redhat.com
Subject: Re: MX secondary, dns and sendmail - what's wrong?
On Fri, 20 Nov 1998, Ramon Gandia wrote:
>
>
> Drew Mouton wrote:
> >
> > First, our dns is like this (this is a pre-BIND8 config file):
> >
> > mydomain.com IN MX 10 serverA.mydomain.com;
> > mydomain.com IN MX 20 serverB.mydomain.com;
>
> 1. What is the semicolon doing at the end of your lines above?
> It should be a period.
>
> 2. serverB.mydomain.com will NEVER get email unless serverA is
> not responding. There is no way, that I know of, that at this
> level you can assign some users to serverA and some to serverB.
I was waiting for somebody to say that <grin>! It's what I thought
to... additionally one way that users could use serverB is by using
the IP address of the machine instead of the name but I think that's
about the only way.
Cheers!
--
Chuck Mead, CEO - Moongroup Consulting, Inc. <chuck@moongroup.com>
http://www.moongroup.com/
http://www.moongroup.com/unix/
There's no such thing as a free lunch.
-- Milton Friendman
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