22 Nov
2007
22 Nov
'07
1:30 p.m.
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