Ok, I've found the source of the list duplications. Some emails (Such as the one by J.K. Lowden 2-March-2015 re: Characters corrupt after importing...) contains a "Reply-To" field in the header with both list addresses which must have sneaked in there due to some automatic list feature. (By "Both" I mean the old: sqlite-users at sqlite.org and the new: sqlite-users at mailinglists.sqlite.org)
I usually use the "Reply to List" button (Thunderbird) which replies correctly, but if you only hit the "Reply to" button then BOTH addresses are inserted in the "To:" field of the message to be sent - which of course results in the duplication (Such as the duplicated message from H. Gunter in reply to the message above). An astute eye might catch this and remove a reference, but mostly nobody cares to study the things that should work automatically - and they shouldn't need to. May I ask the list admin to see if any mention of the old list email address in automatic message body generated text still lingers and can be gotten rid of? Thank you kindly! Ryan
