[Mailman-Developers] Re: Repeating messages

[Barry Warsaw]

On Thursday, May 22, 2003, at 06:33 PM, Nick Arnett wrote:

> FYI, Listserv prevents duplicate messages by checksumming every 
> message and
> rejecting those that appear to be identical within N minutes... in case
> nobody has ever suggested that feature.
>
> And as long as we're on that subject, they also stop some spam by 
> sharing
> the message data and temporarily (24 hours, IIRC) blocking any address 
> that
> sends the same message to N mail servers around the same time.

Excellent suggestions.  I'd also like to include a Message-ID duplicate 
suppressor, which would have also caught the recent dups.

-Barry