On 2018-02-05 18:01:08 +0000, Brian wrote: > Now you have problems (or could have). The first problem is that the > "duplicates" are not duplicates because the headers are different. The > second problem is - which one do you wish to keep? The third problem > (related to the second one) is the order in which the messages arrive. > Is it the mailing list reply first or the Cc:? > > Users of mutt have it easy: > > send-hook . 'unmy_hdr Message-ID:' > send-hook 'debian-user@lists\.debian\.org' 'my_hdr Message-ID:<`date > +"%Y%m%d%H%M%S"`noccsple...@example.com>' > > A mail with NoCcsPlease in its In-Reply-To or References headers can > only have had the mailing list mail as its source. However, the CC will > not contain a List-ID: header. This makes it possible to distinguish > between a list mail and a CC. Procmail recipes based on these two > conditions can now file list mail with certainty and, if desired, delete > CCs.
If this is just a private reply, you will lose mail, unless the procmail recipe also tests the To/Cc headers against the list address (hoping the list server doesn't drop mail for some reason). -- Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)