[Mailman-Users] Mailman reusing message-id, leads to duplicate message suppression
brennan at columbia.edu
Tue Nov 5 15:11:28 CET 2013
--On November 5, 2013 10:25:20 AM +0100 Ralf Hildebrandt
<Ralf.Hildebrandt at charite.de> wrote:
> Who's to blame? Mailman for re-using the message-id? Exchange for
> dropping the second mail on the floor?
The messages are duplicates, so they should have the same Message-ID.
Whether to suppress delivery of duplicates is the choice of an end user, or
a system administrator, or a software designer. I don't know which applies
to Exchange. But in order to allow the choice, which is correctly a choice
to be made at the receiving end, the dups have to be sent with the same
I wouldn't say 'blame'.
Columbia University I T
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