[Dshield] smtp test for open relay

Fred Grayson fred at fred-grayson.net
Mon Jun 23 14:02:20 GMT 2003

Incorrect advice Joe. Connecting to the telnet port is the way it works.

>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.
>-----Original Message-----
>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:
>telnet relay-test.mail-abuse.org

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