On 15 June 2004 at 14:11, rgball <rgball@ellerbach.com> wrote:
On Tue, 15 Jun 2004 11:55:24 -0500, Terry Todd wrote
The original problem is spam got through to a smartlist mailing list by header information being faked. How can that be prevented?
It can't be prevented unless you force all your subscribers to send a special "password" header in their email or you moderate the list.
The closest you can come is to accept messages from subscribers only but there is no way to be 100% certain that the message is coming from who the From: says it is from.
What do others using smartlist do to prevent this from happening?
You can prevent having your address spoofed by adding special headers as Jim mentioned and then checking for those.
I've toyed with keeping a whitelist of accepted PGP keys and only accepting email from users who provide a valid signature. Is this even someone reasonable? James -- James P. Howard, II -- howardjp@vocito.com http://www.jameshoward.us/ -- 202-390-4933