[Mailman-Developers] Re: Please stop the cross posting

[Darren Henderson]

On Fri, 29 Jan 1999, Christian Tismer wrote:

> A message appears to have always an ID which is generated by
> the email program (not sure if that is guaranteed, but very likely).
> That means one could set up the sendmail (qmail, whatever) 
> configuration in a way that it checks the incoming mail for 
> duplicate IDs. This would also work for cross-postings to different

imo this really isn't something that belongs in mailman, you start getting
into all kinds of nasty hueristics ... if you belong to two groups and a
message is cross posted which group do you favor and give the message too?
It just gets worse as you add groups. Do you addresss that by taking the
intersection and making it look like it only comes from one address? Do
you let each user decide?

It would seem better addressed as another list adminisitrator concern. You
could help them I suppose, give them the ability to say, "list a and b
will not accept crossposts from one another" but generally its probably
enough that they gentley remind their users when it occurs excessively.

On the user side procmail makes filtering via msgid quite fiesable. I
think http://members.xoom.com/procmail/aks-lib/dupcheck.rc will do what
you want.

______________________________________________________________________
Darren Henderson                              darren@jasper.somtel.com

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