[Serusers] Problem with messages + msilo

Hey guys, I have been battling with msilo, and the routing logic. It finally looks like it might be beginning to get there, (ser actually restarts now!) lol, but I have a problem when I try and send a message. I am using the serweb utility to try and send to "sip:admin@<ip>" and it reports "message accepted for delivery"... but I don't receive it. Checking the log shows; Jul 16 17:20:01 sip /usr/sbin/ser[20227]: MSILO: the downstream UA does not support MESSAGE requests ... Jul 16 17:20:01 sip /usr/sbin/ser[20227]: ACC: transaction answered: method=MESSAGE, i-uri=sip:admin@161.30.94.68, o-uri=sip:admin@81.86.136.86:5060, call_id=7971f97d-0(a)127.0.0.1, from=sip:admin@sip.dev.inmarsat.com;tag=533cb9e91f4b999cf76861cbb9ed54ed -79e5, code=202 Jul 16 17:20:01 sip /usr/sbin/ser[20187]: ERROR: udp_send: sendto(sock,0xbd70f700,671,0,0xbd70e1dc,16): Invalid argument(22) Jul 16 17:20:01 sip /usr/sbin/ser[20187]: CRITICAL: invalid sendtoparameters one possible reason is the server is bound to localhost and attempts to send to the net Jul 16 17:20:01 sip /usr/sbin/ser[20187]: msg_send: ERROR: udp_send failed Jul 16 17:20:01 sip /usr/sbin/ser[20187]: ERROR: t_forward_nonack: sending request failed Jul 16 17:20:01 sip /usr/sbin/ser[20187]: ACC: transaction answered: method=MESSAGE, i-uri=sip:admin@161.30.94.68, o-uri=sip:admin@81.86.136.86:5060, call_id=7971f97d-0(a)161.30.94.68, from=sip:sip_registrar@161.30.94.68;tag=533cb9e91f4b999cf76861cbb9ed54ed -8a85, code=477 Any ideas? Many thanks again, and thanks for a brilliant list! Dave