Re: [PLUG] checking for open-relay smtp server

[Martin DiViaio <scatterbrained@usermail.com>]

I've always prefered the tests done by ORDB and ORBZ (when it was alive). 
They take longer but you do get more consistant results.

There use to be a web based tester floating around somewhere that did
similar tests in realtime. I'll dig into my notes and post the url if
anyone is interested.

On the 5th day of July in the year 2002 you wrote:

> Date: Fri, 5 Jul 2002 15:29:09 -0400
> From: "christophe [iso-8859-15] barbé" <christophe.barbe.ml@online.fr>
> To: plug ml <plug@lists.phillylinux.org>
> Subject: [PLUG] checking for open-relay smtp server
> 
> I read today on the debian mailing-list an easy way to check if you are
> running an open-relay smtp server.
> 
> The test is very simple :
> 
> telnet relay-test.mail-abuse.org
> 
> will run a few tests (20 currently) on the machine you telnet'ed from
> and report you if one of them indicates that you accept to relay
> outsider mail. 
> If your MTA config is ok you will see something like :
> 
>    System appeared to reject relay attempts
> 
> This is very convenient.
> 
> NOTE: That if your port 25 is closed, you will see nothing.
> 
> Christophe
> 
> 


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