On 23 Nov 2020, at 15:27, Jaroslaw Rafa <r...@rafa.eu.org> wrote: > Dnia 23.11.2020 o godz. 11:49:39 D'Arcy Cain pisze: >> >> If someone replies to a mailing list and copies the sender then that >> person gets two copies. The above recipe avoids that.
> Moreover, it breaks the continuity of threads on mailing lists, because it's > unpredictable which copy will arrive first, and if only the direct copy is > left, the reply will go only to the sender and not to the mailing list. Thus > some messages are missing from lists. This is not accurate. First, the direct message almost certainly arrives first. Second of all, that message still has headers indicating it was sent to the mailing list. Third, whether your client gets confused about threading is a client issue, not an issue of the mail message. (My client does not get confused and the messages end up in the same virtual mailbox regardless). >> People also send to every alias that someone has. Example, >> billing@, admin@, support@, joe@, etc. > But it's usually one message with multiple recipients, and if all these > recipients "resolve" to the same final destination, the receiving MTA > usually avoids creating duplicates. At least that was always the case for me > as the recipient, no matter if I was using sendmail, Exim or Postfix for my > mail. We are talking about duplicated messages with the same message-id. That is one message with multiple recipients. If they were separate messages, they would have unique message-id headers. -- "Are you pondering what I'm pondering?" "I think so, Brain, but why would anyone want a depressed tongue?"
