Re: Pointer: Foiling spam and other procmail email-filter tips

[That Person II]

On Sun, 18 Mar 2012 03:12:00 GMT, t...@uwasa.fi (Timo Salmi) wrote:

>The gentle readers processing their email on a Unix-system, or
>getting their email through a Unix-based system, might be interested
>in the following information.
>
> Timo's procmail tips and recipes
> http://lipas.uwasa.fi/~ts/info/proctips.html
> Last-Modified: Sat 26-Apr-2008 07:32:42
>
> 1. I want to filter my email automatically. How do I get started
> with procmail?
>
> 2. Building a testbench. How can I test individual procmail
> recipes?
>
> 3. I know how to make "and" rules in procmail recipes, but how do I
> make "or" rules?
>
> 4. How can one perform multiple shell commands on the action line?
>
> 5. How can I find out what the subject of a posting is?
>
> 6. How do I get a copy of the headers of all the incoming email
> into a separate file?
>
> 7. Would you give some further hints for spam foiling recipes?
>
> 8. I have limited disk space. How can I truncate long messages?
>
> 9. How can I quickly test if my rules with regular expressions
> match?
>
>10. How can I detect if the email comes, say, from the .com domain?
>
>11. What alternatives do I have to detect a sender all through the
> various header-fields?
>
>12. How can I extract a valid address from the Reply-To field?
>
>13. How can I extract the address of the sender's postmaster?
>
>14. How can I weed out an inordinately long recipient list?
>
>15. What is this procmail scoring? How can I utilize it?
>
>16. How can I test if the subject is empty or if the subject field
> is missing altogether?
>
>17. How can I modify the "To:" field of the email I received?
>
>18. I have a long list of spammers in a separate file. How can I
> utilize it?
>
>19. How do I forward certain messages that I get, and preserve
> myself a copy?
>
>20. How do I forward certain messages to two different addresses?
>
>21. How do I automatically return certain email messages?
>
>22. My address has changed. How do I forward a copy to myself and
> tell the sender?
>
>23. How can I set variable values based on the text in the body of
> the email message?
>
>24. How can I insert some token text in front of the body of
> incoming email?
>
>25. Do you have any useful tips for regular expression matching?
>
>26. How can I test if two procmail variables have the same contents?
>
>27. I am having difficulties with "<". How does one match it?
>
>28. How can I insert identification text to the beginning of the
> subject line?
>
>29. I tried out your tips, but some of them failed on my system.
> What next?
>
>30. Is there a cure for the echo and grep blues?
>
>31. How do I know which of my many procmail recipes has been
> enacted?
>
>32. How can I detect Korean, Cyrillic, or Chinese to avoid such
> frequent spam?
>
>33. How can I change the subject line and include part of the message
> body to it?
>
>34. How can I remove the signature from the incoming email?
>
>35. What unix manuals relating to procmail should I get?
>
>36. Is it possible to use procmail to call the vacation program?
>
>37. How can I avoid duplicate messages sent in rapid succession?
>
>38. How can I skip logging a certain, matched recipe?
>
>39. Could you please solve for me this procmail problem of mine?
>
>40. I liked this material. Do you have anything else on programming?
>
>41. Exercises
>
>42. Acknowledgements for useful advice and/or feedback
>
> All the best, Timo

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[That Person II]