Bounced Mail :(

Tue Jul 11 14:40:26 UTC 2000

Hello one and all :)

I have this all in one Linux Box, that is my home Web Server,
Mail Server, Router for the Internal Network and many others.
It also runs BIND 8.

It is connected to the Internet by a permanent dial up link
and I have ONE SINGLE Ip address. The reverse lookup is 
done by may upstream ISP.

The problem  is that mail to machine.domain.tld works just fine
but mail to domain.tld is rejected.

I have added the domain.tld in the sendmail.cw file and I know
that it SHOULD work :)

What is it that I do wrong?
I include here the zone file :)

Any help will be greatly appreciated.
Alex

This is a bounced piece of mail.
=================================================================
-----Original Message-----
From: alex [mailto:alexs at cube.com]
Sent: Tuesday, July 11, 2000 10:02 AM
To: alexs at cube.com
Subject: 
 ----- The following addresses had permanent fatal errors -----
<alex at www00.com>

   ----- Transcript of session follows -----
554 MX list for www00.com points back to sirius.www00.com
554 <alex at www00.com>... Local configuration error

    [ Part 2: "Delivery Status" ]

Reporting-MTA: dns; sirius.www00.com
Received-From-MTA: DNS; web120.yahoomail.com
Arrival-Date: Tue, 11 Jul 2000 10:07:47 -0400

Final-Recipient: RFC822; alex at www00.com
Action: failed
Status: 5.5.0
Remote-MTA: DNS; www00.com
Last-Attempt-Date: Tue, 11 Jul 2000 10:07:48 -0400

END of Bounced Piece of Mail
======================================================================

The zone file Starts Here
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
$TTL 1D
$ORIGIN	www00.com.
@	IN	SOA sirius.www00.com.	root.localhost. (
			2000070801 ; serial
			28800 ; refresh
			14400 ; retry
			86400 ; expire
			14000 ; default_ttl
			)
			IN	NS		sirius
			MX		0	sirius
			MX		5	www00.com.

www00.com.		IN	A		12.14.30.199
sirius			CNAME		www00.com.
www				CNAME		www00.com.

END Of Zone File
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++