On Thu, 9 Jun 2005, Bret Miller wrote:
> > has anyone developed a good strategy against spams
> > that contain a random text and the actual spam in
> > an image within a multipart/alternative mail?
> >
> > Short of entirely blocking mails containing images, that
> > is.
>
> SURBL, URIBL
Sorry, but SURBL, URIBL et-al only help if there is a URL in
the spam. The spam under discussion here contain ONLY some
random text and an image, no URL.
Usual instance is an image that contains the ad with a phone
number but occasionally ad + URL (inside the image).
EG those fake college degree spams.
Bayes + 'image-only' rules help, somtimes the spammers use an
unusual style of HTML to reference the image and can be caught
with a custom rule.
--
Dave Funk University of Iowa
<dbfunk (at) engineering.uiowa.edu> College of Engineering
319/335-5751 FAX: 319/384-0549 1256 Seamans Center
Sys_admin/Postmaster/cell_admin Iowa City, IA 52242-1527
#include <std_disclaimer.h>
Better is not better, 'standard' is better. B{
