network problems

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Author: Robert Ambrose
Date:  
Subject: network problems
What about sendmail.cw/local-host-names?

Failing that, some information would be next.

How about the output of:

dig -t any the-arcanum.org

and

sendmail -bt
3,0

Let's see those commands have to say for themselfs...

rna

On Wed, 21 Jan 2004, Nathan England wrote:

> This is what I got.
> If I don't have the A record for the-arcanum.org sendmail errors saying
> the domain doesn't exist.
> I created the MX record, the-arcanum.org points to apache (192.168.0.2)
> priority 10
> This is what is said...
>
> The original message was received at Wed, 21 Jan 2004 03:40:58 -0700
> from [192.168.0.5]
>
>    ----- The following addresses had permanent fatal errors -----
> <>

>
>    ----- Transcript of session follows -----
> 554 5.0.0 MX list for the-arcanum.org. points back to
> apache.the-arcanum.org
> 554 5.3.5 Local configuration error

>
>
>
> ``````````````````````
>
> On Wed, 2004-01-21 at 03:10, Robert Ambrose wrote:
> > Do you have the-arcanum.org listed in sendmail.cw/local-host-names (or
> > whatever the name de jour is)? The MX record for you internal DNS zone
> > should point to the system which will receive the email. Since the email
> > shouldn't be going outside your LAN, port blocking by Qwest should not be
> > an issue. Specifying an A record for the-arcanum.org is not necessary to
> > get email delivered to the-arcanum.org, the MX record does this.
> >
> > A very useful technique for debugging how an email address will be
> > delivered to is to use the -bt option with sendmail:
> >
> > sendmail -bt
> > 3,0
> >
> > Will show how sendmail thinks an email addressed to this recipient will
> > be delivered.
> >
> > rna
> >
> > On Wed, 21 Jan 2004, Nathan England wrote:
> >
> > >
> > > I am trying to setup internal e-mail on my systems and I'm having weird
> > > problems. My firewall is 192.168.0.1, my e-mail (sendmail and ipop3d)
> > > are on 192.168.0.2, .2 is also my internal dns that all my machines use.
> > >
> > > My firewall is setup for eth0 being my vdsl connection, eth1 is my
> > > internal nic. All machines connect to the outside via iptables nat.
> > >
> > > Qwest blocks port 25, I think that's my problem, coming from the
> > > internal nat.
> > >
> > > when 192.168.0.5 sends an e-mail, it goes to .2 which resolves
> > > the-arcanum.org as internal 192.168.0.1, when I watch sendmail on .2, it
> > > says it is deferred and stops. It won't send it.
> > >
> > > I tried changing my dns to resolve the-arcanum.org to be .2 , but that
> > > didn't work, it came back saying that the message loops back to itself,
> > > MX problem. So I added MX records for the-arcanum.org to point to .2 but
> > > then sendmail just times out trying to send a message.
> > >
> > > Is this all because qwest is blocking 25 and I'm internally nat'ing, or
> > > something else? I didn't have this problem when I had normal dsl without
> > > any ports being blocked, but maybe I'm missing the problem.
> > >
> > > Can anyone shed some light on this for me?
> > >
> > > nathan
> > >
> > >
> >
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