I have a problem just for a register sent by an UA
Ser never answer specifically to this UA
 
Any idea?
 
82.146.104.8:5060 -> 82.146.123.252:5060
  REGISTER sip:finalcut.be SIP/2.0..Via: SIP/2.0/UDP 192.168.1.10:5060;rport;branch=z9hG4bKCFBFD849F983424E89C236A4DECBCBF4..From: 3000 <sip:3000@finalcut.be>;tag=1511252229.
  .To: 3000 <sip:3000@finalcut.be>..Contact: "3000" <sip:3000@192.168.1.10:5060>..Call-ID: C85B8CAC95244D5498E6D657C8BFDC06@finalcut.be..CSeq: 25334 REGISTER..Expires: 1800..
  Max-Forwards: 70..User-Agent: X-Lite release 1103m..Content-Length: 0....