Outgoing call problem [CM503013]

[OwenBurnett]

when trying to call from the internet over 3cx i get the following error:
21:24:32.188 [CM503013]: Call(15): Incoming call rejected, caller is unknown; msg=SipReq: INVITE [email protected]:5060 tid=xxxxxx.HRHAN cseq=INVITE [email protected]:5060 / 4930 from(wire)

I assume the problem ist that it wants a number @x.dyndns.org, can i somehow tell it to always assume @localhost?
also can i somehow change in the 3cx android client the @domain ?

 

[willow]

it must match on both sides or the 3cx will reject the call.

 

[OwenBurnett]

in my lan I use domains xxx.local while from outisd ethe router pc is accressible through dyndns with xxx.dyndns.org

how can I make it match?