I just got some spam that had the entire body base64 encoded, it's
content-type was "multipart/mixed" with one part, the base64, which was
listed as type "text/html".

Here's what hit:
PLING,BASE64_ENC_TEXT

I see two big issues:
1) it should have hit on the "html only" test, even though it was labelled
as multipart, it had only one part.
2) the body wasn't parsed at all and thus bypassed all body tests, and
therefor got through the filter unscathed.

It seems that spammers could get around a lot just by base64 encoding
their message?

Jay





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