New answers tagged encoding
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I'll add to @Tom Leek's answer with a bit more specifics on how one of the most common open spamfilter on the market (spamAssassin) checks whether something is spam. At the core of it, it is a simple set of rules (the default ones for the latest spamd version can be found at http://spamassassin.apache.org/tests_3_3_x.html ), some with very simplistic checks. ...
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There is probably nothing to decode there. Spammers are engaged in a continuous war with antispam filters so they try to include in their spams some "text" which will make some antispam filters think that it is not really spam after all. It is probable that there is, out there, one antispam software (at least) which currently gets fooled by such extra ...
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