 
            Mark Sapiro writes:
On 10/20/25 17:50, Cathryn McGuire wrote:
More importantly, what are you trying to accomplish? I.e. what do you want to happen in the following cases?
Message To: the list, no Cc: -- Accepted Message To: the list, Cc: to other address (non-member) -- Hold for moderation. Message To: the list, Cc: to a member's address ?? AcceptedI don't think you can accomplish this one.
I agree with Mark -- I don't see how to do this without changes to the code. Also, note that even if you could configure this as you desire, the CC addresses will be delivered. But people who subscribe but aren't CC'd will receive the post only if and when the post is released from hold. Only you can decide whether that's desirable, but it's likely some subscribers will be unhappy about it.
If preventing subscribers from getting duplicates is a reason for these settings, there is a user option (I think it's "Not Me Too") that suppresses list distribution to subscribers whose addresses are in To or CC. The list owner can set this manually, one by one. The site owner (who can log in on the host) can use a simple script to do so. When this is set, only the direct message (without list decorations in Subject or footer) is received by CC'd subscribers. This probably won't affect MUAs that organize posts into threads (conversations), but may look odd to subscribers if your lists are configured to add tags or serial numbers to the Subject.
If the point is to discourage resending list posts to third parties, about all you can do is use the anonymous list option to clean all addresses except the list's out of the header. "Full personalization" will substitute the subscriber's address for the list address, but I don't think it has any effect on third party addressees.
Steve
-- GNU Mailman consultant (installation, migration, customization) Sirius Open Source https://www.siriusopensource.com/ Software systems consulting in Europe, North America, and Japan