[Mailman-Developers] Repeating messages

[Michael Yount]

There is at least one problem case:  someone posts a message from an
address that isn't subscribed to the list and receives a notice that the
message was moderated/rejected.  That person then posts the message
again from the correct address, and again receives a notice, this time
because the message is a duplicate.

Michael

On 22 May 15:33, 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.
>