Re: Confirmation email with captcha

2009-06-12 Thread Gabriel Hahmann
Wow. Thank you very much for everybody who answered my question. In fact some of the problems related with captcha I already knew, but some of them I've never thinked about. In fact the problem that I have is that one of my lame clients is asking for a solution like this, so I need to find so

Challenge-response [Was: Confirmation email with captcha]

2009-06-10 Thread mouss
Ralf Hildebrandt a écrit : > * Gábor Lénárt : > >>> This is a backscatter source and will get you blacklisted in no time. >> Hmm, what would be if someone use a policy server, rejecting the mail with >> the link for the captcha URL in it. > > That sound interesting. It could work! It definitely s

Re: Confirmation email with captcha

2009-06-10 Thread brian moore
On Wed, 10 Jun 2009 11:40:58 -0600 LuKreme wrote: > This is known as a "Prove You Love Me" scheme and is, essentially, > offloading your spam problems onto everyone else who sends you mail. > You will find a LOT of people are pissed off by these PYLM emails, > and will not reply. Nor will si

Re: Confirmation email with captcha

2009-06-10 Thread LuKreme
On 10-Jun-2009, at 01:24, Gabriel Hahmann wrote: 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

Re: Confirmation email with captcha

2009-06-10 Thread Jose-Marcio Martins da Cruz
Hello, M. Fioretti wrote: On Wed, Jun 10, 2009 09:24:09 AM +0200, Gabriel Hahmann wrote: Good morning, ... if you aren't convinced yet, there is also http://www.cl.cam.ac.uk/~rnc1/cr/index.html If you're still not yet convinced, take a look at w3.org opinion : http://www.w3.org

Re: Confirmation email with captcha

2009-06-10 Thread Jozsef Kadlecsik
On Wed, 10 Jun 2009, Ralf Hildebrandt wrote: > * Gábor Lénárt : > > > > This is a backscatter source and will get you blacklisted in no time. > > > > Hmm, what would be if someone use a policy server, rejecting the mail with > > the link for the captcha URL in it. > > That sound interesting. It

Re: Confirmation email with captcha

2009-06-10 Thread Ralf Hildebrandt
* Gábor Lénárt : > > This is a backscatter source and will get you blacklisted in no time. > > Hmm, what would be if someone use a policy server, rejecting the mail with > the link for the captcha URL in it. That sound interesting. It could work! It definitely solves the backscatter issue. --

Re: Confirmation email with captcha

2009-06-10 Thread Gábor Lénárt
Hei, On Wed, Jun 10, 2009 at 09:29:06AM +0200, Ralf Hildebrandt wrote: > > 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, automati

Re: Confirmation email with captcha

2009-06-10 Thread M. Fioretti
On Wed, Jun 10, 2009 09:24:09 AM +0200, Gabriel Hahmann wrote: > Good morning, > > I'm looking for a tool that can handle confirmation emails with > captcha and that works with postfix. > ... > Using a tool like this I can stop all spam mail that arrives my inbox. Gabriel, tools like these are

Re: Confirmation email with captcha

2009-06-10 Thread Ralf Hildebrandt
* Gabriel Hahmann : > 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

Confirmation email with captcha

2009-06-10 Thread Gabriel Hahmann
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 f