Hello to all,
I searched for some tips in this forum to use the expression filter, with any result.
So after three days of work with try and error and reading books about PCRE, here some tips about the expression filter.
You get mails like this "RE: xcvbVjjagra"?
try this "(?i)(re|fw|fwd)\:\s\w+(?i)agra\b"
(?i) means "ignore case sensitivity to the following expression"
(x|y) is a enumeration of expressions in this case RE, FW and FWD
\: for the colon, without this it didn`t work. It says that the colon is just a colon.
\s one whitespace
\w+ one or more word characters like "xcvbVjj"
(\w stands for word character and the following + for "one or more"
(?i)agra means "agra" not case sensitiv
\b end of word
or try this:
(?i)(re|fw|fwd)\:\s\w+R\w+(?i)lex\b
works against Re: jsdhRoalex
You want to filter short words like "drugs", but you are afraid about image- or pdf-streams with this expression.
(?i)\bdrugs\b
first \b means wordbeginning, second \b means end of word.
You get also mails with one image and many words without bad words?
filter image001.gif
I found out that almost all images in this mails have this name. Ok, there are maybe some good mails with this imagename in it, but the most images have good names like "error.gif" I think.
If someone has more good tips, this will be a good thread for newbies which want to use the expression filter.
cheers
bxxp
two links about regular expressions
http://en.wikipedia.org/wiki/Regular_Expression
http://de.wikipedia.org/wiki/Regular_Expression ...for people like me :-)
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