I cannot get the NAT to work

Hello,

we have Astaro 220 and we have a strange problem,
Firmware version: 8.301,
I cannot get the NAT to work,
for exemple i am trying to set NAT on port
3389 (rdp) to an internal server,
when the rule is disabled i can see the connection beeing
blocked on the firewall live log, when i activate the NAT rule
i see the connection on the live log in grey color and with the messege
"[SYN] len=52 ttl=110 tos=0x00 srcmac=b8:62:1f:a6:7c:51 dstmac=0:1a:8c:16:21:f2 "
the rule configuration is:
Traffic Source:Any
Traffic Service:Microsoft Remote Desktop (RDP)
Traffic Destination: One of our external ip's
NAT mode:DNAT
Destination: My local server ip adress
Automatic
Firewall rule:Yes

Same for every NAT im trying to configure,
our astaro is on a diferent vlan from the server

Thanks