El Wednesday 05 March 2008 10:34:27 Cosimo Fadda escribió: > Hi Amit, > you can distinguish this two conditions as suggested from RFC 3261: > > if (user not found) -> sl_send_reply("480","Temporarily Unavailable"); Yeah, the point here is: 480 Temporarily Unavailable [...] This status is also returned by a redirect or proxy server that recognizes the user identified by the Request-URI, but does not currently have a valid forwarding location for that user. > if (user not exist) -> sl_send_reply("404","NOT Found"); 404 Not Found The server has definitive information that the user does not exist at the domain specified in the Request-URI. [...]