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List:       majordomo-users
Subject:    [majordomo-users] The daily digest for Majordomo-Users V7 #98
From:       majordomo-users-owner () greatcircle ! com
Date:       2006-10-31 11:20:03
Message-ID: 20061031112011.99AFB29008B () mycroft ! greatcircle ! com
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The daily digest for Majordomo-Users 
Volume 7 : Issue 98 : "text" Format

Messages in this Issue:
  New, exciting, free
  HACK: displaying origin headers 

----------------------------------------------------------------------

Date: Mon, 30 Oct 2006 13:50:09 -0600 (CST)
From: admin@joy.frih.net
To: majordomo-users@greatcircle.com
Subject: New, exciting, free
Message-ID: <1336.89.106.98.65.1162237809.squirrel@www.joy.frih.net>

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Best regards



------------------------------

Date: Tue, 31 Oct 2006 00:33:54 -0700
From: "Sean Casey" <mj@scaseyllc.com>
To: <majordomo-users@greatcircle.com>
Subject: HACK: displaying origin headers 
Message-ID: <000801c6fcbe$eb2ae300$6401a8c0@DBDMJ061>

Thought this might be useful to some here. 

The problem:
1.Spammers send their junk to majordomo@ with a bogus From: address
2.Majordomo sends a "Majordomo results:" help message to the From: address
3.The domain bounces the mail
4.Majordomo delivers the bounce to majordomo-Owner

Since the default message contains no information about the original sender
(the spammer), there's little or nothing to be done to
correct/complain/block the sender.  We get about 10 of these per day. Would
probably get more, but we do some VERY aggressive blocking of spamming
servers. 

The hack:
Modified sub done {} in majordomo (see below)
This prints the incoming mail headers at the bottom of any help message
where 
"**** No valid commands found"
If the From: is legitimate, having the headers at the bottom is probably
OK...certainly doesn't detract from the message.
If not, majordomo-Owner now has the full headers of the spammer's message,
and can act accordingly. 

Note that this won't happen for a 'help' request, only when the message
contains NO valid commands. 
Thoughts? Comments?

Sean


Here is the entire subroutine, with the added code marked: 
# We are done processing the request; append help if needed, send the reply
# to the requestor, clean up, and exit

sub done {
    # append help, if needed.
    if ($count == 0) {
	print REPLY "**** No valid commands found.\n";
	print REPLY "**** Commands must be in message BODY, not in
HEADER.\n\n";
    }
    if ($needs_help || ($count == 0)) {
	print REPLY "**** Help for $whoami:\n\n";
	&do_help();
    }
###### begin added code #####
	### added to print the incoming mail message headers...scc
    if ($count == 0) {
		print REPLY "\n\n**** Incoming Mail Headers\n";
		foreach $header (@hdrs) {
			print REPLY "$header\n";
		}
    }
##### end added code #####
    # close (and thereby send) the reply
    close(REPLY);

    # good bye!
    exit(0);
}


------------------------------

End of [majordomo-users] The daily digest for Majordomo-Users V7 #98
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