Someone

recv 713 bytes from udp/[10.0.0.107]:46727 at 20:38:05.473478:
   -------------------:-----------------------------------------------------
   REGISTER sip:MYDOMAIN:5060 SIP/2.0
   Call-ID: ce8b419777e01e5d268efc23111dc8b1@10.0.0.107
   CSeq: 2964 REGISTER
   From: "1001" <sip:1001@MYDOMAIN>;tag=2556947950
   To: "1001" <sip:1001@MYDOMAIN>
   Via: SIP/2.0/UDP 10.0.0.107:46727;branch=z9hG4bKb2aa240329dd92de8edc0d003a0503c6313439;rport
   Max-Forwards: 70
   User-Agent: SIPAUA/0.1.001
   Contact: "1001" <sip:1001@10.0.0.107:46727;transport=udp>
   Expires: 3600
   Authorization: Digest username="1001@10.0.0.1",realm="MYDOMAIN",nonce="OMMITED",uri="sip:MYDOMAIN:5060",response="OMITTED",algorithm=MD5,qop=auth,cnonce="xyz",nc=00000001
   Content-Length: 0

   ------------------------------------------------------------------------
send 510 bytes to udp/[10.0.0.107]:46727 at 20:38:05.495665:
   ------------------------------------------------------------------------
2012-04-01 16:38:05.488297 [WARNING] sofia_reg.c:1287 SIP auth failure (REGISTER) on sofia profile 'internal' for [1001@MYDOMAIN] from ip 10.0.0.107
   SIP/2.0 403 Forbidden
   v:SIP/2.0/UDP 10.0.0.107:46727;branch=z9hG4bKb2aa240329dd92de8edc0d003a0503c6313439;rport=46727
   From: "1001" <sip:1001@MYDOMAIN>;tag=2556947950
   t:"1001"<sip:1001@MYDOMAIN>;tag=5FU41Se3vD9rQ
   Call-ID: ce8b419777e01e5d268efc23111dc8b1@10.0.0.107
   CSeq: 2964 REGISTER
   User-Agent:FreeSWITCH-mod_sofia/1.0.head-svn-exported
   Allow:INVITE,ACK,BYE,CANCEL,OPTIONS,MESSAGE,UPDATE,INFO,REGISTER,REFER,NOTIFY,PUBLISH,SUBSCRIBE
   k:timer,precondition,path,replaces
   l:0