#15 Decode text/* types for processing

closed
nobody
None
5
2003-05-13
2003-03-31
Jim Meyer
No

I've been receiving rather a lot of spam lately from
some clever folks who've figured out that they can sent
text/html MIME attachments which are BASE64 encoded and
get through most any spam filter. It'd be nice to put a
stop to that.

Discussion

  • Fajar Nugraha

    Fajar Nugraha - 2003-04-01

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    Actually, spamassassin (with bayesian filter enabled) can
    block that. You have to feed it with lots (over 200 each) of
    manually-selected spam and nonspam samples (different ones,
    200 identical sample will not work) first to activate
    bayesian filter, AND you should also modify the BAYES_* test
    scores.

    The problem is, even if you have managed to get bayesian
    filtering enabled the machine load (especially disk
    READ/WRITE) will be A LOT higher.

     
  • Matthias Andree

    Matthias Andree - 2003-04-01
    • status: open --> pending
     
  • Matthias Andree

    Matthias Andree - 2003-04-01

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    Which version of bogofilter are you using? The 0.11 versions
    are capable of decoding base64.

     
  • Jim Meyer

    Jim Meyer - 2003-04-07

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    I'm using v0.11.1.5.

    And I'm hoping to use bogofilter without SpamAssassin in
    order to keep machine load down. =]

     
  • Jim Meyer

    Jim Meyer - 2003-04-07
    • status: pending --> open
     
  • David Relson

    David Relson - 2003-04-13

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    The 0.11.x versions of bogofilter do everything you mention.
    They handle mime encoded multipart messages and decode
    base64, quoted-printable, and uuencode sections, and
    understand text/plain and text/html. If you're having
    problems with this, post the information on the bogofilter
    mailing list (see the FAQ for info) so your difficulties can
    be corrrecteed.

     
  • David Relson

    David Relson - 2003-05-13
    • status: open --> closed
     

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