[Serusers] Two Question for SER Users.

Hello List. I have two questions. First. I wan to know how this configuration works. if (method=="INVITE") { if ( !radius_proxy_authorize("")) { proxy_challenge("", "1"); log (1, "LOG: Llamada no AUTORIZADA\n"); break; }; When a endpoint is unahutorized to make a call, and my radius server answer with "Authentication Reject", i don't see my log messsage in the standard out, ("LLamada no AUTORIZADA"), even with log level = 3. I was trying to see how this authorization works. For example i see in my debugs something like this : --> INVITE sip:7515960@mydomain.com SIP/2.0. <-- SIP/2.0 407 Proxy Authentication Required. --> ACK sip:7515960@sipvoiss.desarrollo.redvoiss.net SIP/2.0. --> INVITE sip:7515960@sipvoiss.desarrollo.redvoiss.net SIP/2.0. w/Digest <-- SIP/2.0 407 Proxy Authentication Required. --> ACK sip:7515960@sipvoiss.desarrollo.redvoiss.net SIP/2.0. --> INVITE sip:7515960@sipvoiss.desarrollo.redvoiss.net SIP/2.0. w/Digest <-- SIP/2.0 407 Proxy Authentication Required. --> ACK sip:7515960@sipvoiss.desarrollo.redvoiss.net SIP/2.0. At any time i see a "Unauthorized message" coming from my SER, i don't even see my log message. Is there a way to answer with a message like this? SIP/2.0 404 Unauthorized - LLAMADA NO AUTORIZADA EN ESTE SERVER. Hope that someone can help me here. Second Question. I was trying to restrict the domains that i can serve in my SER. I'm doing this with the alias=domain1.com , etc and the uri=myself. Is this a secure way to do this?. And what happend when someone try to reach me with my own IP server address?. For example a INVITE message with INVITE sip:7515960@ip.of.my.ser.server SIP/2.0. By default the uri=myself permits this IP? Thanks in advance Best Regards. Ricardo Martinez.-