Re: [Exim] bounce from [0.0.0.0]

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Author: Tabor J. Wells
Date:  
To: exim-users
Subject: Re: [Exim] bounce from [0.0.0.0]
On Sun, Jun 30, 2002 at 07:50:41PM -0400,
Adam Henry <hank@???> is thought to have said:

> Noticed something I never have seen before, any thoughts? Have a
> closer look at the IP address of the sender. The only harm I think
> this has done is to create a bounce loop, but should I be
> ultra-responsible and contact the DNS admin for E-Finance Network,
> LLC?
>
> 17OmWi-0008TM-00 (what started it all):
>
> > 2002-06-30 17:46:36 17OmWi-0008TM-00 <= <> H=localhost
> > (intrepid.marinar.com) [127.0.0.1] P=esmtp S=4475
> > id=E17OmWi-0008TH-00@??? T="Mail delivery failed:
> > returning message to sender" from <> for bxeasyqual@???
> >
> > 2002-06-30 17:46:37 17OmWi-0008TM-00 => bxeasyqual@???
> > F=<> R=lookuphost T=remote_smtp
> > H=loan-prospects.com [0.0.0.0] C="250 OK id=17OmWj-0008TQ-00"
> >
> > 2002-06-30 17:46:37 17OmWi-0008TM-00 Completed


0.0.0.0 is equivalent to localhost on most (all?) systems.

> dig mx loan-prospects.com


; <<>> DiG 9.1.2 <<>> mx loan-prospects.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 8466
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1

;; QUESTION SECTION:
;loan-prospects.com.            IN      MX


;; ANSWER SECTION:
loan-prospects.com.     86400   IN      MX      10 loan-prospects.com.


;; AUTHORITY SECTION:
loan-prospects.com.     86400   IN      NS      udns1.ultradns.net.
loan-prospects.com.     86400   IN      NS      udns2.ultradns.net.


;; ADDITIONAL SECTION:
loan-prospects.com.     3600    IN      A       0.0.0.0



Look at using the ignore_target_hosts option to not try and deliver to these
and other IPs (like, RFC 1918 space for example).

Tabor

--
--------------------------------------------------------------------
Tabor J. Wells                                     twells@???
Fsck It!                 Just another victim of the ambient morality