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Open relay ?

Printed From: LogSat Software
Category: Spam Filter ISP
Forum Name: Spam Filter ISP Support
Forum Description: General support for Spam Filter ISP
URL: https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4638
Printed Date: 15 June 2025 at 9:48pm


Topic: Open relay ?
Posted By: Guests
Subject: Open relay ?
Date Posted: 25 November 2004 at 9:15am

This I found in my out queue:

Received: from 203.59.3.81 by (LogSat Software SMTP Server - Unlicensed Evaluation Copy) Thu, 25 Nov 2004 15:57:19 +0200

To: spammer@spam.test

From: @[xxx.xxx.xx.xxx]

Subject: test for susceptibility to third-party mail relay

Date: <P>Thu, 25 Nov 2004 13:54:19 GMT</P>

Message-Id: <rlytest-1101390859-15269@staff.iinet.net.au>

Sender: spammer@spam.test

This is a test of third-party mail relay.

X-Server: LogSat Software SMTP Server - Unlicensed Evaluation Copy

X-SF-RX-Return-Path: <spamtest@localhost>

Target host = xxx.xxx.xxx.xxx 5959308

Test performed by <spammer@spam.test>

A well-configured mail server should NOT relay third-party email.

Otherwise, the server is subject to attack and hijack by Internet

vandals and spammers.

For information on how to secure a mail server against third-party

relay, visit <URL: http://mail-abuse.org/tsi/>." CLASS="ASPForums" TITLE="WARNING: URL created by poster. - http://mail-abuse.org/tsi/>.

Additional Comments


Replies:
Posted By: keizersozay
Date Posted: 25 November 2004 at 11:00pm

I would start by searching your log files for clues as to why this message was accepted.

Are you using spamfilter to send email as well as receive it?

Posted By: Guests
Date Posted: 26 November 2004 at 1:02am
Thanks for your reply!
 
Log files show: RCPT TO: name@domain.com accepted
Why this? When I only have one domain in my Local Domain-list
(and that's not the same domain as on RCPT TO accepted)
And Whitelist Authorized TO is empty.
 
I send mail trough my mailserver.
 
Kim

Posted By: Guests
Date Posted: 26 November 2004 at 3:44am
Hi !
I found the problem(took a look in the mirror)!
 
When I re-installed the program all over again and again...,
I was in hurry because I was immediately Spammed from Korea...
So I ended up messing with one response code!
 
It seems that if you have wrong in your response-code(s),
SpamfilterISP becomes Open Relay.
 
Now it seems to work ok again...and quite effectively too!
 
Thanks,
Kim


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