[Dshield] smtp test for open relay
BLANCHAJ at bsci.com
Mon Jun 23 13:37:27 GMT 2003
Try telnet relay-test.mail-abuse.org 25
Without the 25 you'll be attempting a telnet session and
not a SMTP session.
After connecting, you'll need to spoof an SMTP transaction
using the traditional helo, mail from: , and rcpt to:
followed by data then the content.
From: Fred Grayson [mailto:fred at fred-grayson.net]
Sent: Monday, June 23, 2003 9:12 AM
To: list at dshield.org
Subject: [Dshield] smtp test for open relay
>Do you have links to ips web sites (or others) that test for open
>relays for an IP ? I've got one to test and I don't know where to go.
If you have access to the machine running the mail server itself, you can
test it. Just run this from a shell:
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