Missing LSB tags and overrides

If you wish to just add your own tags, edit the mentioned boot scripts, and add them.

For example, /etc/init.d/dovecot would have something like this near the top, somewhere after the #!/bin/sh line:

### BEGIN INIT INFO
# Provides:          dovecot
# Required-Start:    $local_fs $network
# Required-Stop:     $local_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: dovecot
# Description:       dovecot pop & imap daemon
### END INIT INFO

where the only important part is the Provides bit... just set it to the name of the service.

The descriptions can be any basic text.