On Mon, 17 Jan 2005, Vincent wrote: > I am new to perl, I receive some spam email with subject like "st0ck, > 0pportunities, gr0wth...", how can I match those words with number "0" > in
You don't. I spent a about a year doing pretty much what you're asking for here, though with Procmail rules instead of Perl. Same difference, in this case. Getting these patterns right is *really* hard to do -- as a simple example, what happens when someone sends you a legit mail with a zero in the subject line? To: Vincent <[EMAIL PROTECTED]> From Vincent's significant other <[EMAIL PROTECTED]> Subject: meet for drinks at 10 First St at 8:00 tonight? A mail like that would trip a naive filtering rule. To: Vincent <[EMAIL PROTECTED]> From Vincent's significant other <[EMAIL PROTECTED]> Subject: meet for drinks at Pier01 at 8:00 tonight? And, if such a place as "Pier01" existed, you wouldn't be able to have it in the subject line even with a good filter running. This is the wrong way to attack spam. You're much better off setting up something like SpamAssassin, which among other things builds up a collection of little rules like this which then collectively determine if a message probably is or is not spam. Additionally, it can look at messages you explicitly classify as spam or non-spam, and build up a statistical profile of what does or does not look like spam to *you*, using Bayesian statistics. This is approach is far more effective than just about anything else, and is the general strategy that most other spam filters are using today. If you need help setting up SpamAssassin, go to their website at <http://spamassassin.apache.org/>. They have documentation and mailing lists that can help you get up and running. SA is written in Perl, so once you're running with it, you can adjust it as you like. If the "digits in words" rule is important to you and there isn't one for it already (there probably is, but no problem if not), you can add one and set a score for it as needed. You can ask for help with that either here or on the SA lists. -- Chris Devers -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
