Was: Shuttleworth (SABDFL) wants to shutdown this ubuntu.user list

[Amedee Van Gasse]

                   On 30/09/2011 23:28, Rashkae wrote:     Nonsense.
 SMTP has nothing to do with in.  Mailman already has
to scan and       modify the headers of every message
before re-submitting the       message the mail server
for distribution to the subcriber list.        Mailman
also aready has the logic to organize mail messages
into       threads. (which it uses for the web based
archives.)
       The problem here, though, I admit, is that the threading is
probably done after the message has been processed and "sent to
  the list".. whereas to implement my idea, that information would
     have to be figured out (via Subject header and or
In-Reply-To:        header, or whatever else is used to properly
thread the messages)       and compared to a blacklist of threads
before being forwarded to       the list proper.
          Again, due to the simplicity of SIMPLE Mail Transfer Protocol,
this     is futile. Mail clients can drop the In-Reply-To:
header     (intentionally or not), Subject headers can be
changed, if it's a     common subject then you risk blocking too
much,...
     It also sounds like too much overhead for a mailing list software
that only has to accept mails and forward them to list members. It
 sounds more like a job for spam software. You could install that in
   your mail client.