(Ted Harding) wrote:
On 27-Jul-06 Wayne Stallwood wrote:
I'm wondering a bit why Mark (OP) is seeking such a solution (interesting idea though it is). I receive on average over 1000 emails a day, about 2/3 of which are pure spam (and at least half the rest are mailing-list postings which I'm not interested in reading). I have no particular difficulty, and very close to 100 per cent success, in deleting these on the receiving server before I donwload the rest, purely on the basis of apparent sender, and subject line. Total time for this: 15-20min/day.
Two reasons. One is pure annoyance factor. Second is that I'm interested in the technical challenge. Third is that I have customers who would pay for it.
OK that's three reasons. And I could probably think of some more!
It is annoying getting the exact same spam several times a day and having anti-spam miss it completely.
It did cross my mind that at the email level the MIME encoding is just lots of strings of text, which if the image is identical same each time should be sufficient (I assume SA doesn't look at it though). But that does assume the images are identical; one pixel change might be enough to break it.