Hi Mark,
thanks for your advice. Unfortunately we need some more clues. First of all, we are using mailman docker by maxking - https://github.com/maxking/docker-mailman
Our version: Mailman Core Version - GNU Mailman 3.3.5 (Tom Sawyer) Mailman Core API Version 3.1 Mailman Core Python Version 3.8.10 (default, May 6 2021, 06:30:44) [GCC 9.3.0]
We put an example footer.txt into the templates folder as you mentioned: mailman3_core => var/templates/sites/de/list:member:regular:footer.txt Mailman user can read them
Created a new list, restarted the docker-container, but it always showed the default footer.txt and not our example footer.txt from the templates folder. Any guesses or clues? Where is this default footer.txt hiding anyway? Changing languages in postorius works fine and it alters between english, german etc... just won't use our custom footer.txt
Much appreciate your effort helping people!