Hello! My plan is to install fresh Mailman3 host, which means that i need to migrate/transfer my existing mailman mailing lists + hyperkitty archives to new host. Unfortunately i didnt find any good documentation about this. I tried myself to export and import mailmanweb/mailman databases (from old PostgreSQL to new PostgreSQL) and recreate indexes(mailman-web update_index). Now i can see and search hyperkitty archives, but if try to open one of the mailing list, i get error - HTTP Error 500: {"title": "500 Internal Server Error"} So im pretty sure, that I'm gonna have to transport some more stuff over, which I have no idea. Maybe existing users and user rights.
If its not a big trouble, can someone kindly share, what exactly should i need to export/import and what would be the right steps/commands/moves.
Br, Kimmo