Procmail recipe: blocking 'unsubscribe and opt-out' messages....

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Procmail recipe: blocking 'unsubscribe and opt-out' messages....

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Email Antispam Techniques and Email Filtering Techniques Q&A and Procmail recipes for fighting spam.

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#1 (permalink)

02-17-2003

Neo

Administrator

Join Date: Sep 2000

Location: Asia Pacific

Posts: 6,721

Procmail recipe: blocking 'unsubscribe and opt-out' messages....

Here is a crude procmail recipe that I quickly created (NOT a procmail recipe expert, btw) that has been catching lots of spam (current second after the charset_spam recipe posted earlier):

Code:

:0B
* .*If.you.do.not.wish.to.receive.[further|additional].[email|mailings].*
more_spam

:0B
* You.requested.to.receive.this.mailing
more_spam

:0B
* [Uu]nsubscribe|[Oo][Pp][Tt]-[Oo][Uu][Tt]|[Rr]emoved
* [Cc]lick [Hh]ere
* HTML
more_spam

OBTW, I think I read somewhere that procmail is not case sensitive within regular expressions and I've tested this and it seems they are not. So, the above can be simplified to:

Code:

:0B
* Unsubscribe|Opt-Out|Removed
* Click Here
* HTML
more_spam

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