On 1/31/2022 9:43 AM, Geoff Mulligan via mailop wrote:
1. If a recipient on an email message is both in the To: or Cc: and on
the mailing list, should the listserver send the message to the recipient:
a) By default
b) Not by default (but configurable)
c) Never
by default. redundancy is safer than failed delivery and the mailing
cannot know enough to know what other components are doing or what the
users actually want.
The only time pruning is reasonable is when the entity doing the pruning
has complete knowing. Typically, that is only at the time of
submission, so that multiple occurrences of the /same/ recipient address
gets turned into a single SMTP RCTP-To.
Pruning at receive time might make sense, but it carries some dangers.
Pruning anywhere along the path strikes me as gross dereliction of duty.
2. If a mailing list is in the BCC: should a message be delivered to the
list:
a) Yes - always
b) No - never
c) Configurable
d) Convert it to a CC:
The question presumes that the handling system can know it is a mailing
list. It can't.
And by the way, if an author puts a mailing list into a BCC, of course
they want the message delivered to the list. What is the basis for
pretending to know better and override that decision?
d/
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