Re: Majordomo and spammers

FYI, demime also strips attachments at the same time that it strips 
the mime from a message.  I have lots of subscribers scratching their 
heads on that one...

Ed

At 03:58 PM Friday, 7/11/2008, Daniel Liston wrote -=>
>I have a sneaky suspicion that your spam may be graphical in nature, 
>where there is no body content, just an attached graphic.
>Demime removes the HTML content, leaving an empty message (just 
>assuming here), before your aliases file passes the
>converted message to your -outgoing alias where the digest script is 
>called.  You are probably creating your own problem in
>this case.
>
>As for the sequentiality of your pre-digest files, I have seen this 
>too, in some cases.  The solution is another patch...  I offer
>this piece of an email that I sent in September of 2003.
>
>>Do the timestamps on the digest.$$ messages coincide with times that
>>email was received for your list?  Have you looked in the
>>$digest_work_dir
>>to see what files are queued up in there?  Are there any skipped
>>numbers in the sequence of files?  You might need to modify line
>>#176 of the digest script to say
>>
>>          foreach (sort @files) {
>>
>>to clean things up.  You might also consider creating a tmp directory
>>in the majordomo $HOME (or work directory if they are different) with
>>the proper majordomo ownership and permission, then setting $TMPDIR in
>>the majordomo.cf to use that directory.
>In fact, I found reference to the same change on line 176 of digest 
>in a posting from Sept 2000 too.
>
>Dan Liston
>
>Tom Patterson wrote:
>>Thanks to Joe for help on this problem.  The patch immediately cut 
>>out the messages which were bouncing back to me due to the use of 
>>invalid e-mail addresses by the spammers.
>>
>>I am however left with the problem that majordomo is still picking 
>>up on the spam messages and creating zero content messages in the 
>>digest folder.  When the digest is created, it then shows these 
>>messages, albeit as blank.
>>
>>I have a script which deletes all zero content messages in the 
>>digest folder immediately before the mkdigest command is issued by 
>>a cron job.  The problem then arises that the remaining messages 
>>are not sequentially numbered in the digest folder, and do not all 
>>get picked up by the digest. I can get around this problem by 
>>renumbering the messages, starting from zero.
>>
>>Also, I have two lists.  Only the list starting with the letter "s" 
>>is picking up the blank messages.  The list starting with the 
>>letter "v" does not pick up blank messages.
>>
>>As the spam is addressed to majordomo@domainname, I assume that 
>>majordomo is dumping the blank messages into the first folder he 
>>comes to.  I also assume that if I created a dummy list starting 
>>with a alpha character prior to "s", the zero messages would end up 
>>there, leaving my list folders unaffected by the spam.  I will try this next.
>>
>>However, is there some way to prevent majordomo from creating these 
>>zero content messages?
>>
>>-Tom
>>
>>----- Original Message ----- From: "Joe R. Jah" <[email protected]>
>>To: "Tom Patterson" <[email protected]>
>>Cc: <[email protected]>
>>Sent: Wednesday, July 09, 2008 9:51 PM
>>Subject: Re: Majordomo and spammers
>>
>>
>>>On Wed, 9 Jul 2008, Tom Patterson wrote:
>>>
>>>>Date: Wed, 9 Jul 2008 06:04:38 -0500
>>>>From: Tom Patterson <[email protected]>
>>>>To: [email protected]
>>>>Subject: Majordomo and spammers
>>>>
>>>>I have recently moved my site to a new server using Q Mail, and 
>>>>reinstalled Majordomo.  I am having two problems.
>>>>
>>>>1.  I am getting hit with a great amount of spam addressed to 
>>>>majordomo, which is generating replies to non-existent addresses, 
>>>>which in turn bounce back to me.  The replies are the standard 
>>>>reply from majordomo when it does not understand a message.
>>>>      Is there any way of stopping these replies from Majordomo 
>>>> or of changing the majordomo's address from [email protected]?
>>>>
>>>>2.  All of these spam messages to majordomo are generating zero 
>>>>content messages in the digest folder, which in turn, adds blank 
>>>>messages to the digest.  How can this be fixed?
>>>>
>>>>-Tom