E: The repository ‘https://repo.dovecot.org/ce-2.3.16/ubuntu/focal focal Release’ no longer has a Release file.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
Ist heir aber Debian_10???
Support hab ich nun gekauft.