[Mailman-Users] How do the spammers do it?

[Brad Knowles]

At 5:10 PM +0200 2005-05-15, Christophe Meessen wrote:

>  The only efficient filtering system I can think of would use mail
>  signature (pkcs7/pgp). Such signature can be generated for free it is
>  only used for a specific application like a mailing list.

	If the signature is automatically generated by the MUA, then the 
trojans/spybots can make use of this and still get through.  The only 
way you can make this work is if you require actual human 
intervention on the part of the sender, and that would probably also 
require human intervention on the part of the mailing list 
administrator -- for each and every message.

-- 
Brad Knowles, <brad at stop.mail-abuse.org>

"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."

     -- Benjamin Franklin (1706-1790), reply of the Pennsylvania
     Assembly to the Governor, November 11, 1755

   SAGE member since 1995.  See <http://www.sage.org/> for more info.