Can you add next line before the execution of auth_check() in your config file:

xlog("==== handling $rm ($ci) for authorization: $hdr(Authorization)\n");

Then test and send again the log messages.

Cheers,
Daniel

On 07/03/16 21:30, Bruno Henrique Gomes Gouvêa wrote:
Sorry, my mail client change text, correct is (without blank space):

   REGISTER sip:pabx999999.ligou.me;transport=UDP SIP/2.0
        Via: SIP/2.0/UDP 189.13.125.28:49288;branch=z9hG4bK-d8754z-f96a8271ea34f240-1---d8754z-
        Max-Forwards: 70
        Contact: <sip:101_pabx999999.ligou.me@189.13.125.28:49288;rinstance=98fe0089b166bd85;transport=UDP>
        To: <sip:101_pabx999999.ligou.me@pabx999999.ligou.me;transport=UDP>
        From: <sip:101_pabx999999.ligou.me@pabx999999.ligou.me;transport=UDP>;tag=9d3ef068
        Call-ID: YWQ5YzU4ZTc4MGU5NWE3OGI3Y2U2YjdmZDA0YTFmZmE.
        CSeq: 3 REGISTER
        Expires: 3600
        Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE
        Supported: replaces, norefersub, extended-refer, timer, X-cisco-serviceuri
        User-Agent: Z 3.6.25251 r25476
        Authorization: Digest username="101_pabx999999.ligou.me",realm="pabx999999.ligou.me",nonce="Vt3evVbd3ZGT5CKFEKVFXx3NZHKisGcp",uri="sip:pabx999999.ligou.me;transport=UDP",response="6b3a6709fa3ec3ad313811a704ffb6d9",algorithm=MD5
        Allow-Events: presence, kpml
        Content-Length: 0

--------------------------------------------

Bruno H. G. Gouvêa

CEO - CiberCloud LTDA


--- 
 Bruno H. G. Gouvêa


 Tel.: (31)99554646
---


2016-03-07 17:27 GMT-03:00 Daniel-Constantin Mierla <miconda@gmail.com>:
Hello,

have you mangled the sip message you pasted here? I see a white space in front of username in From/To headers, which can lead in mismatching the authentication username with caller id username.

Cheers,
Daniel

-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Training, Berlin, March 7-9, 2016 - http://www.asipto.com