[Serusers] problem with UA

[giAndrea]

Hi to all

I've a small problem. When I try to REGISTER with MSN i can see this message

U 157.27.242.227:4014 -> 217.57.90.117:5060
REGISTER sip:sip.quellidelpirana.it SIP/2.0..
Via: SIP/2.0/UDP 157.27.242.227:16757..
From: 
<sip:giandrea at sip.quellidelpirana.it>;tag=3a965a5f-1b25-4144-b509-ed6fb6f60d6e..
To: <sip:giandrea at sipquellidelpirana.it>..
Call-ID: fd9e04be-a1c2-472b-b78d-da18f2dbf3a3 at 157.27.242.227..
CSeq: 1 REGISTER..
Contact: <sip:157.27.242.227:16757>;methods="INVITE, MESSAGE, INFO, 
SUBSCRIBE, OPTIONS, BYE, CANCEL, NOTIFY, ACK"..
User-Agent: Windows RTC/1.0..
Expires: 1200..
Event: registration..
Allow-Events: presence..
Content-Length: 0....

but when I try to use Xlite I can see this

U 157.27.242.227:5060 -> 217.57.90.117:5060
   REGISTER sip:sip.quellidelpirana.it SIP/2.0..
   Via: SIP/2.0/UDP 
157.27.242.227:5060;rport;branch=z9hG4bK43C50241B19C4F9BA5F82F0922D526C1..
   From: Andrea <sip:giandrea at sip.quellidelpirana.it>..
   To:   Andrea <sip:giandrea at sip.quellidelpirana.it>..
   Contact: "Andrea" <sip:giandrea at 157.27.242.227:5060>..
   Call-ID: CFBD07105A04447A86952238875CEC95 at sip.quellidelpirana.it..
   CSeq: 35983 REGISTER..
   Expires: 1800..
   Authorization: Digest 
username="giandrea",realm="sip.quellidelpirana.it",nonce="40f3e286cc783dea71369a49455a559eb8a4d341",response="a733f8ddfbc5cf07ba23ca368e750cdb",uri="sip:sip
   .quellidelpirana.it"..
   Max-Forwards: 70..
   User-Agent: X-Lite build 1101..
   Content-Length: 0....

why MSN doesn't insert Authorization???
Why I can use iptel account but not my sip proxy account? Have I to change 
my ser.cfg?
Can I read a SIP tag from my configuration ?


With MSN the www_autorize fail

if (uri==myself) {

         xlog("L_INFO", "%rm / %mi --> uri==myself");

         if (method=="REGISTER") {

                 xlog("L_INFO", "%mf / %ct");

                 if (!www_authorize("sip.quellidelpirana.it", "subscriber")) {
                         log(1, "Auth: NO - requesting authentification\n");
                         www_challenge("sip.quellidelpirana.it", "0");
                               break;
                 } else {
                         log(1, "Auth: YES");
                 };

                 save("location");
                         break;
         };
};


Andrea