Joachim I was trying to validate my usage of externally managed fail2ban and figured out, the URL displayed at https://<myserver>/admin happens to be https://<myserver>/api/v1/get/fail2ban/banlist/<guid>, whereas posts https://community.mailcow.email/d/3470-different-url-for-ip-info-in-fail2ban https://community.mailcow.email/d/3582-fail2ban-url-403-error suggest it should be https://<myserver>/f2b-banlist?id=<guid>. However that URL reports 404 Not Found (of course with the External flag turned on). Also documentation at https://docs.mailcow.email/manual-guides/mailcow-UI/u_e-mailcow_ui-netfilter/#change-netfilter-ban-settings is still showing the old variant. Can someone please clarify?
ETNyx There is bug see this, or in second post you linked is commit, if you apply it, it will apparently get f2b-banlist working