We have Installed Kamailio in Debain 8.

All p,s,i and hss servers are in one PC.

We are able to register the users(Alice and Bob).

When initiate call from Alice , INVITE is passing through

 Alice -> p-cscf -> i-cscs -> s-cscf -> i-cscf -> s-cscf

when it is reaching again s-cscf server, we are getting error .(403 Forbidden  - Domain not served)

We are attaching all logs and wireshark logs.

Kindly let us know, where and why it is failing.

regards,

Prasannakumar.