[Gnu-arch-users] Re: Describing archives (new feature at the mirror)

[Stefan Monnier]

> The only sane place where it can be fixed is at the sender end.

Sorry, can't be done: you in general can't know who's on which list.  And if
a message is cross-posted to several lists and you're subscribed to several
of them, then it just plainly cannot be done at all.  A human might be able
to do it in 90% of the cases, but it's work.  Doing it fully automatically
at the sender end is difficult and error prone.  OTOH doing it fully
automatically at the receiver end is easy and reliable and best of all it
can be dnoe by those who care: instead of having to convince everyone who
might send mail to you to setup some duplicate-elimination system, you set
it up yourself on your own system.

> Removal of duplicates without opening trivial DoS attacks against your
> mailbox is impossible.

There are already plenty of trivial DoS attacks on your mailbox that
I wouldn't worry about adding another minor one, really.

> By the time the duplicate mails reach the destination, they have been
> significantly munged by the MLM;

What do you mean by "significantly"?

> this list runs on mailman, which is spectacularly bad in this respect.
> Now which one are you supposed to deliver?

Who cares which, since the only interesting part of the content is the same.

> There isn't a solution here, because the data has already been
> discarded (Bcc).

What would you do with `Bcc'?


        Stefan