Re: [exim] Callback issues - vdomain w/external MX can not m…

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Author: Dominic Cleal
Date:  
To: exim-users
Subject: Re: [exim] Callback issues - vdomain w/external MX can not mail other users on server
Make sure you use the "Reply" function of your e-mail client. Your
e-mail is missing the headers to link the threads together which makes
it difficult for people to follow.


On Sat, 01 Jul 2006 08:38:35 -0400
Debbie Doerrlamm <wkdwich@???> wrote:

> > > So the way I read all this my server greeted the external mail
> > > server and all was good until my server tried to verify the
> > > USER1@??? .. I belive it is trying to verify USER1 as a
> > > LOCAL user because 1domain does exist on the server.. but of
> > > course there is no such user here so it bounces the mail.
> >
> >The debug output you pasted doesn't suggest that. It suggests that
> >the remote host for "1domain.com" is refusing the null sender.
>
> Just to be totally clear on your response.. you said:
> >It suggests that the
> >remote host for "1domain.com" is refusing the null sender.
>
> Remote=external mail server for idonails.com [209.42.34.104]
> or
> remote=server where the domain is hosted [64.79.202.131]


The external mail server, 209.42.34.104 is refusing the null sender.
Simple test:

$ telnet mail.idonails.com 25
Trying 209.42.34.104...
Connected to static.user104.209.42.34.dsli.com.
Escape character is '^]'.
220 idonails.com ESMTP MDaemon 6.8.4; Sat, 01 Jul 2006 09:07:15 -0400
HELO elara
250 idonails.com Hello elara, pleased to meet you
MAIL FROM: <>
550 Sorry, this server is configured to refuse this sort of mail (to
combat the SPAM problem)

Badly configured mail server on the other end. Exim uses the null
sender for sender verification checks and so this will automatically
fail them all.

> I see it as server.wwwebserv.com refusing the mail because it can not
> verify supplysource1@??? - server.wwwebserv.com thinking
> because idonails is a local domain, checking locally to not find a
> user of supplysource1. If this is correct, then it is my problem and
> I need to resolve this.


Not quite - it can't verify it, not because of an incorrect setup on
your side, but the remote host.

> mail    14400   IN      A       209.42.34.104
> www     14400   IN      CNAME   idonails.com.
> ftp     14400   IN      A       64.79.202.138
> mail.idonails.com       14400   IN      MX      0       209.42.34.104


Incidentally, that probably isn't doing what you expect. You've added
an MX record for "mail.idonails.com.idonails.com". You should change
it to this really:

mail       14400   IN      MX      0       209.42.34.104


The reason is that there should be a full stop on the end of the name
if it's fully qualified.

--
Dominic Cleal
dominic@???