[PLUG] checking for open-relay smtp server

[christophe barbé <christophe.barbe.ml@online.fr>]

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

-- 
Christophe Barbé <christophe.barbe@ufies.org>
GnuPG FingerPrint: E0F6 FADF 2A5C F072 6AF8  F67A 8F45 2F1E D72C B41E

Cats are intented to teach us that not everything in nature has a
function. --Garrison Keillor

Attachment: pgp2uj3pzwgAz.pgp
Description: PGP signature