Hi, I am new to SER and have been having this problem for a while which I'm not sure how to resolve. Any pointers would be greatly appreciated On the openser.cfg when I use the "forward" or the "send" calls with an IP inside I see the following upon running openser ( Note I have masked the real IP's) ./openser Listening on udp: 208.xxx.xx.xx tcp: 208.xxx.xx.xx WARNING: no fork mode stateless - initializing 0(0) Maxfwd module- initializing textops - initializing 0(0) AUTH module - initializing 0(0) AUTH_DB module - initializing 0(0) ERROR: mk_proxy: could not resolve hostname: "sip:208.1xx.44.yy:5060" ERROR: error -478 while trying to fix configuration Anybody have any ideas? I have tried putting a DNS name to the IP address as well but it comes back with the same error. Regards Piyush