Re: Spam and spam filtering, a problem new to me
On (25/09/06 16:31), Roberto C. Sanchez wrote:
> On Mon, Sep 25, 2006 at 02:14:49PM -0600, Paul E Condon wrote:
> > Over tha past few weeks, I have started receiving spam email that
> > contains text the is all well formed words, but doesn't make sense as
> > a spam message, or as any other sort of communication. I think I have
> > found what is going on:
> > The email *does* contain a message. It is contained in a .gif or .png
> > or other image format file. These are not pictures of naked ladies,
> > but images of text that touts various penny stocks. If I didn't use
> > mutt, I might not have had so much puzzlement over them. I suppose
> > with Outlook all the user sees is the image, which is clearly spam,
> > but the user doesn't see what the spam filter sees, so, it seems, no
> > amount of filter fiddling will protect against this. What to do? Are
> > there new filtering techniques beyond spamassassin?
> Reject anything with a .gif or .png attachment?
There was a thread a while back when the list was being inundated with
messages like "Offical Security Update". A very simple solution is to
use mailfilter which uses regex filters to reject mail when collecting
from a POP server.
...strategies for business