It seems I am getting duplicate messages from mailman v2.1.5 when senders send both TO and CC to the list. For some reason no one else in the list is acknowledging this issue so I look like an idiot complaining about it, but I'm seeing several instances of it per day.
I do not get dupes of all mails otherwise I'd suspect double subscription. The Avoid Duplicates flag is set. This only happens for mails that have the list in the CC - I understand the dupe flag is for when people use ReplyAll and the recipient is in both the list of subscribers and the CC for the mail. I believe the code is supposed to filter duplicate Message-IDs to a given recipient no matter how those dupes are generated, but I'm getting them. Any ideas?
Thank you kindly.