phpop3clean.readme.txt

来自「一个基于页面实现的pop客户端程序」· 文本 代码 · 共 31 行

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/// phPOP3clean() by James Heinrich <[e-mail]>    //
//  available at http://phpop3clean.sourceforge.net            //
/////////////////////////////////////////////////////////////////


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What is phPOP3clean?
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phPOP3clean is a PHP-based POP3 email scanner. It's designed to be
run as a cron job every minute or so, and to catch & delete several
types of unwanted emails:

a) malformed emails - incomplete or malformed headers, which cause
   some POP3 servers to drop connection when the message is retrieved

b) email worms - attached executable files matched against database
   of known variant, including matching variable-length files or
   files with internal random bytes (such as the currently-popular
   Netsky & Beagle variants).  Zipped attachments are unzipped and
   scanned. Password-protected zipped attachments are matched based
   on deceptive filenames (eg: "readme.txt   .exe").

c) image-based spam - attached images are matched against database of
   known spam images to reject messages containing only an inline
   attached image (technique of bypassing many spam filters). Images
   with random bytes appended are also matched.

d) obfuscated word spam - scans message body for obfuscated words,
   such as "v磬qr