Subject: RE: blacklist user beware

From: zmailer <[email-masked]>
Date: Mon, 5 Aug 2002 13:54:10 -0300

> -----Original Message-----
> From: Matti Aarnio [mailto:[email-masked]]
> Sent: Lunes, 05 de Agosto de 2002 13:39
> To: Roy Bixler
> Cc: 
> Subject: Re: blacklist user beware
> 
> 
> On Mon, Aug 05, 2002 at 10:32:25AM -0500, Roy Bixler wrote:
> > This weekend when setting up Z-Mailer on a new NetBSD 
> installation, I
> > discovered an interesting little catch.  I use the ORDB list of open
> ...
> > It turns out that, instead of the usual DNS requests of the form
> > d.c.b.a.relays.ordb.org, the SMTP server was actually requesting
> > d.c.b.a.relays.ordb.org.org.  Whoever is in charge of the org.org
> 
>    What might be in your   /etc/resolv.conf  file ?
>    Specifically if you have a "search" line(s) there ?
It ain't HIS /etc/resolv.conf... it's an awfull wildcard configuration in
the org.org. domain...

Check this out:
$ host -t ns org.org.   
org.org. name server ns.soma.net.
org.org. name server ns.prichard.net.

$ host anything.org.org. ns.soma.net.          
Using domain server:
Name: ns.soma.net.
Address: 64.246.32.29#53
Aliases: 

anything.org.org. has address 127.0.0.1

$ host any_thing=really/F*ck\'d\!.org.org. ns.soma.net. 
Using domain server:
Name: ns.soma.net.
Address: 64.246.32.29#53
Aliases: 

any_thing=really/F*ck'd!.org.org. has address 127.0.0.1

> 
>    My resolver has never (to my knowledge) done any such traversals,
>    but one never knows..
> 
> > In hopes this might save someone some trouble-ly yours,
> > R.
> 
> -- 
> /Matti Aarnio	<[email-masked]>
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--
Mariano Absatz
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