Kamailio 3.1.2<br>I am using Kamailio in front of Freeswitch as simple sip router. To do multi-tenant in Freeswitch I created SIP domain (fs2000.ly.net) and used as sip domain inside my sip phone. This domain does not map to any real IP and no entry in our DNS server. If I sent the call directly to Freeswitch, it works fine and registered with Freeswitch. When I tried to go through Kamailio using dispatcher to route the call to freeswitch, I got this error:<br>ERROR: &lt;core&gt; [resolve.c:1540]: ERROR: sip_hostport2su: could not resolve hostname: "fs2000.ly.net"<br><br>The strange thing is that sometime the call did go through kamailio and registered with freeswitch. <br>Whenever I restart Kamailio, I got above error and then the error went away by itself. Sometime took a minute and sometime took several hours. And sometime the error come back without restart.<br><br>Does anybody know why? Why dispatcher want to resolve the hostname when it only lookup dispatcher for destination IP?<br><br>Gary<br>