After I got the NTP to be tricked into being installed, I also re-installed some stuff and now it looks like this:
root@srv01:~# dpkg -l | egrep "zen(buntu|tyal)-"
ii zenbuntu-core 7.0.1ubuntu1 all Zentyal Environment for Ubuntu Server
ii zenbuntu-desktop 7.0.1ubuntu1 all Zentyal Desktop Environment for Ubuntu Server
ii zentyal-antivirus 7.0.3 all Zentyal - Antivirus
ii zentyal-ca 7.0.1 all Zentyal - Certification Authority
ii zentyal-core 7.0.6 all Zentyal - Core
ii zentyal-dhcp 7.0.2 all Zentyal - DHCP Server
ii zentyal-dns 7.0.2 all Zentyal - DNS Server
ii zentyal-firewall 7.0.0 all Zentyal - Firewall
ii zentyal-ftp 7.0.0 all Zentyal - FTP
ii zentyal-groupware 7.0.0ubuntu1 all Zentyal - Mail and Groupware
ii zentyal-ips 7.0.1 all Zentyal - Intrusion Prevention System
rc zentyal-jabber 7.0.0 all Zentyal - Jabber
ii zentyal-mail 7.0.3 all Zentyal - Mail
ii zentyal-mailfilter 7.0.0 all Zentyal - Mail Filter
ii zentyal-network 7.0.0 all Zentyal - Network Configuration
pi zentyal-ntp 7.0.0 all Zentyal - NTP Service
ii zentyal-openvpn 7.0.0 all Zentyal - VPN
ii zentyal-radius 7.0.0 all Zentyal - RADIUS
ii zentyal-samba 7.0.3 all Zentyal - Domain Controller and File Sharing
ii zentyal-software 7.0.0 all Zentyal - Software Management
ii zentyal-sogo 7.0.1 all Zentyal - Web Mail
rc zentyal-squid 7.0.2 all Zentyal - HTTP Proxy
ii zentyal-virt 7.0.1 all Zentyal - Virtualization Manager
root@srv01:~# dpkg -l | egrep -v "^ii"
Gewünscht=Unbekannt/Installieren/R=Entfernen/P=Vollständig Löschen/Halten
| Status=Nicht/Installiert/Config/U=Entpackt/halb konFiguriert/
Halb installiert/Trigger erWartet/Trigger anhängig
|/ Fehler?=(kein)/R=Neuinstallation notwendig (Status, Fehler: GROSS=schlecht)
||/ Name Version Architektur Beschreibung
+++-=====================================-=====================================-============-===============================================================================
rc systemd-timesyncd 245.4-4ubuntu3.2 amd64 minimalistic service to synchronize local time with NTP servers
rc zentyal-jabber 7.0.0 all Zentyal - Jabber
pi zentyal-ntp 7.0.0 all Zentyal - NTP Service
rc zentyal-squid 7.0.2 all Zentyal - HTTP Proxy
Not so bad , and the web management CAN be found with
http://srv01:8443 , BUT the user management is gone :
"Element not found
we're sorry
The request contains a reference to a element which doest not exists
If you typed the page address manually, please check it
Maybe the element was removed and the page address is not longer valid
It can be also a parameters cache error, in this case you can navigate again to the page using the left menu
If you need more help, you may want visit Zentyal homepage for documentation and mailing lists"
So yes its quite fucked up, still. :-(