* Gabriel Hahmann <[email protected]>:
> Good morning,
> 
> I'm looking for a tool that can handle confirmation emails with
> captcha and that works with postfix.
> 
> The idea is, when somebody sends me an email and this address have
> never sent me any other mail, automatically the sender receives a
> message with a web link, explaining that is the first that it sends
> mail to me and need to authenticate.

This is a backscatter source and will get you blacklisted in no time.

-- 
Ralf Hildebrandt
Postfix - Einrichtung, Betrieb und Wartung       Tel. +49 (0)30-450 570-155
http://www.computerbeschimpfung.de
C++ haters point out that even the name of the language contains a
bug: "After all, it really should be called ++C, since we only want to
use a language after it's been improved." 
               -- Cay Horstmann & Gary Cornell, "Core Java", Sun Press

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