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I've started to see some spam with subjects like the following:
Satterwh, =?ISO-8859-1?B?bG93ZXN0IHByaWNlIGluc3VyYW5jZSB5ZXQu?=
This is an obvious attempt to hide the subject so that it won't be caught by
rules. I tried to write a rule to trap this type of encoding as follows:
header LENCSUBJECT Subject =~ /\=\?.*\?\=/i
Describe LENCSUBJECT (Local) Subject encoded
score LENCSUBJECT 1.5
If I feed the pattern above into perl and then try to match on the subject
line from this email, it matches true.
If I put it into my rules file and test against Spamassassin, it doesn't
match. I'm obviously missing something. Can one of you gurus help?
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iD8DBQE/6adgjeziQOokQnARAkeJAKC62u1rpAVm+cvC+qGW2j1nL4YusgCeMrd/
n2klvd5vuhvSmT3Up8tC0XY=
=qvFi
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