[Dshield] smtp test for open relay

Blanchard, Joe BLANCHAJ at bsci.com
Mon Jun 23 15:33:15 GMT 2003

I tried just a few minutes ago, appears to be
working fine. You do need to be telneting from the
mail server you wish to test, and have the appropriate
ports open if theres a firewall between the server and
the internet.


-----Original Message-----
From: Marc Chabot (.net) [mailto:marc at chabot.net]
Sent: Monday, June 23, 2003 11:19 AM
To: General DShield Discussion List
Subject: Re: [Dshield] smtp test for open relay


FG> My suggestion was for him to access that machine and:
FG> telnet relay-test.mail-abuse.org

FG> The result of this is that the machine at mail-abuse.org will back
connect to Marc's mail server and 
FG> attempt to relay mail thru it with a rather extensive set of relay
tests, most of which are nontrivial 
FG> compared to what most folks suggest trying by hand via a normal smtp

Bull's eye!   That's what I was looking for.  Did anybody tried it
today?  It look like thay have problems on their side because all it
says is:

/proj/maps/bin/in.relaytest: socket failed [bad file descriptor]
connecting to  (the right IP address I use..)
connection to host failed

There was not a single attempt logged on the mail server.

Best regards,
 CanonBall                            mailto: marc at chabot.net

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