RRAS between 2 servers

Question

Hey
we have 2 VPS servers with a single WAN NIC. (each server has its own public ip)
DC01 is the domain controller
TS01 is a terminal server currently working in a workgroup
i installed the RRAS server on both of the devices and created a new domain user with dial in permissions.
configured the ipv4 settings on dc01
on the TS01 i created a new connection and for the start i choose PPTP
when i create a connection from the network and sharing center everything works fine 
however when i use the RRAS console with exact the same settings i got a error
Server side >
Log Name:      System
Source:        RemoteAccess
Date:          12/23/2014 10:20:55 PM
Event ID:      20253
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      DC01.Domain.com
Description:
RoutingDomainID- {00000000-0000-0000-0000-000000000000}: CoId={3XXXXXXX64}: The user DOMAIN\user connected to port VPN3-126 has been disconnected because no network protocols were successfully negotiated.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="RemoteAccess" />
    <EventID Qualifiers="0">20253</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2014-12-23T21:20:55.000000000Z" />
    <EventRecordID>15381</EventRecordID>
    <Channel>System</Channel>
    <Computer>dc01.DOMAIN</Computer>
    <Security />
  </System>
  <EventData>
    <Data></Data>
    <Data></Data>
    <Data>DOMAIN\USER</Data>
    <Data>VPN3-126</Data>
  </EventData>
</Event>
ON the client
The user SYSTEM dialed a connection named DC01 which has failed. The error code returned on failure is 720.
how is it possible that the network and sharing center vpn works and the RRAS client not?

Answer 1

I had some time to install a testlab
I use vmware (but it should be exact the same on HyperV)
First i created a new virtual switch with no connections at all
Then i create 2 servers and attach them to the virtual switch
TestL1
IP: 1.1.1.1
Windows server 2012 evaluation version
remote access>RAS & Routing
Secure connection betwean two private networks
Demand dail > Yes
Ip > specific pool
10.0.0.1 - 10.0.0.100
Error opening ports in firewall
disable the windows firewall
New connection wizzard appears
Connection name TestL2
Type: VPN
ip: 1.1.1.2
VPN:PPTP
Route IP package to this interface
10.0.1.0 255.255.255.0 Metric 5
Dial-out credentials: administrator (no domain)
Reboot
TestL2
IP: 1.1.1.2
Windows server 2012 evaluation version
remote access>RAS & Routing
Secure connection betwean two private networks
Demand dail > Yes
Ip > specific pool
10.0.1.1 - 10.0.1.100
Error opening ports in firewall
disable the windows firewall
New connection wizzard appears
Connection name TestL1
Type: VPN
ip: 1.1.1.1
VPN:PPTP
Route IP package to this interface
10.0.0.0 255.255.255.0 Metric 5
Dial-out credentials: administrator (no domain)
Reboot
After the reboot i noticed that non of the servers accept the RAS connection
Go to settings and check IPv4 Remote access server
goto ports > pptp >check Remote access connection (inbound only)
This are brand new installations without any group policy's and not joined to the domain
the only software installed is vmware tools