Re: Challenge-response mail filters considered harmful (was Re: Look at

[Alan Connor <alanc@localhost>]

I hate to have to do this, but I own an apology to Paul Johnson.

(Having received a mail from a list member with an example of a false CR. Talk
about FAST.) 

Spammers DO send false CRs, but they are EASY to spot.

A real one will have:


Subject: Re: The_Subject_of_Your_Original_Message


AND the Reply-To:  header will have the address that you mailed it to, making

it simplicity itself to send it back, as well as adding another level of
authentication.


Alan

-- 
      For Linux/Bash users: Eliminate spam with the Mailbox-Sentry-Program. 
         See: http://tinyurl.com/inpd  for the scripts and docs.