NEW SCCM - Client not Reporting (Question Mark)

[Lunaithil89]

Hello Community, i cant pinpoint the problem on this..please have a shot at my situation, appreciated
My Setup
NETWORK ENVIRONMENT
All servers/devices on the subnet 255.255.255.0
2 Servers with static IP: 10.0.0.1 and 10.0.0.2
AD/DC/DNS/DCHP Server (10.0.0.1)
SCCM/SQL Server(10.0.0.2)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CLIENT
============Firewall============
TCP Port: 445 Inbound, enabled
TCP Port: 80 Outbound, enabled (Client to SCCM TCP-Connection Test worked)
============GPO============
File&Printer Inbound&Outbound ->retrieved from the DC
WMI Inbound ->retrieved from the DC
============CM Agent============
Assigned Management Point: '(MyServer)'-->positive
Client certificate: 'self-signed'-->positive
Sitecode: 'SMS: (MySiteCode)'-->positive
Components: (All installed,except the 'Notification Agent')
Actions available: Machine Policy & EvaluationCyle, User Policy Retrieval & Evaluation Cycle-->missing actions
============Services============
Bits ->enabled-->positive
===========ADMIN SHARE==========
\\(Client IP)\admin$-->Accessable from the Site/MP Server
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
SCCM/SQL SERVER
============Firewall============
TCP Port: 80,445 Inbound enabled-->positive
TCP Port: 389, 3268 ,135 enabled-->positive-->SCCM to DC TCP-Connection Test worked
============GPO============
File&Printer Inbound&Outbound ->retrieved from the DC-->positive
WMI Inbound ->retrieved from the DC-->positive
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
MISC

1. The SCCM/SQL Server has Full Control of the 'System Management' Container Object and its descendant objects.
2. SCCM Boundary Groups are correctly set (IPrange group-->assigned to sccm site server)-->this is confirmed due to the Client Agent retrieving the correct informations and getting the agent installed.
3. Component Status: No Errors or warnings
4. I did already a manual gpupdate and a reboot on the client machine and triggered the available actions on the cm agent. No results.
5. via SCCM Remote WMI on the Client tested-->positive
6. Disabled the Firewalls (SCCM and Client)-->and reinstalled CM Agent-->negative result

What am i overseeing here?
Why can't the CM Agent exchange informations with the MP via Port 80?