[Mailman-Users] Challenge/response

[Jay Chandler]

Bob Morse wrote:
> I have a client who is concerned about his list subscriber addresses being
> spoofed. In other words someone who knows the addresses of people on the
> list can set up a mail server and spoof the subscriber so he can post nasty
> things to the list. He would like to set up a challenge/response mechanism
> so that when xyz at domain.com posts to the list, xyz at domain.com gets sent a
> copy of the message and must confirm that he/she was the sender before it
> gets posted. I don¹t see any configuration in Mailman for this. Is it
> possible?
>
> BTW, searching the archives at mail-arcihve.com gets a 404 error.
>
>   
Realize that should you implement Challenge/Response, your server WILL 
be blacklisted by various DNSBLs out there.  Backscatter is 
indistinguishable from spam to spamtraps.

-- 
Jay Chandler
Network Administrator, Chapman University
714.628.7249 / chandler at chapman.edu
Today's Excuse: positron router malfunction