> > Well in case for example dovecot mail list when you reply by pressing reply > all, it generate same message-id for these two messages. Anyway I'm agree > with you, we can't be sure for all such cases.
Hi Nikolay, As Steffen has already said, the "message-id" is not the same as the ID you will get from your MTA in the Received: Header If the IDs in the received header on your end do not match, that is 2 seperate deliveries so you will get 2 in your box. Different mail clients can get around this by hiding dupe threads (mutt for instance). Mark
