that's nice to know. thanks for all your help.
about dovecot:
if you have dovecot installed from the dovecot repository, then be
aware that dovecot does not (yet) provide a version for bookworm.
if you have dovecot installed from the debian repository, then you
should be fine.
about debian:
read
-
https://www.debian.org/releases/bookworm/amd64/release-notes/ch-upgrading.en.html
-
https://www.debian.org/releases/bookworm/amd64/release-notes/ch-information.en.html
twice! especially chapter 4.5 and 5.
greetings...
