Internal Server Error messages nginx proxy POP/IMAP/SMTP

[dominus.ceo]

Thank's in advance.

The php ngnix integration already worked fine, but your idea it is goot to
know what else  is obtained with the manual request, I put the result of the
execution:

168.122.170:80/correo-proxy-auth/auth.php
* About to connect() to 192.168.122.170 port 80 (#0)
*   Trying 192.168.122.170...
* Connected to 192.168.122.170 (192.168.122.170) port 80 (#0)
> GET /correo-proxy-auth/auth.php HTTP/1.1
> User-Agent: curl/7.29.0
> Accept: */*
> Host:192.168.122.170
> Auth-Method:plain
> Auth-User:ricardo.carrillo
> Auth-pass:r3dh4t
> Auth-Protocol:imap
> Auth-Login-Attempt:1
> Client-IP: 192.168.122.1
> 
< HTTP/1.1 200 OK
< Server: nginx/1.6.2
< Date: Thu, 12 Mar 2015 15:46:11 GMT
< Content-Type: text/html
< Transfer-Encoding: chunked
< Connection: keep-alive
< X-Powered-By: PHP/5.4.16
< 
Array
(
    [USER] => apache
    [HOME] => /usr/share/httpd
    [FCGI_ROLE] => RESPONDER
    [PATH_TRANSLATED] => /usr/share/nginx/html/correo-proxy-auth/auth.php
    [QUERY_STRING] => 
    [REQUEST_METHOD] => GET
    [CONTENT_TYPE] => 
    [CONTENT_LENGTH] => 
    [SCRIPT_NAME] => /correo-proxy-auth/auth.php
    [REQUEST_URI] => /correo-proxy-auth/auth.php
    [DOCUMENT_URI] => /correo-proxy-auth/auth.php
    [DOCUMENT_ROOT] => /usr/share/nginx/html
    [SERVER_PROTOCOL] => HTTP/1.1
    [GATEWAY_INTERFACE] => CGI/1.1
    [SERVER_SOFTWARE] => nginx/1.6.2
    [REMOTE_ADDR] => 192.168.122.170
    [REMOTE_PORT] => 39783
    [SERVER_ADDR] => 192.168.122.170
    [SERVER_PORT] => 80
    [SERVER_NAME] => localhost
    [REDIRECT_STATUS] => 200
    [HTTP_USER_AGENT] => curl/7.29.0
    [HTTP_ACCEPT] => */*
    [HTTP_HOST] => 192.168.122.170
    [HTTP_AUTH_METHOD] => plain
    [HTTP_AUTH_USER] => ricardo.carrillo
    [HTTP_AUTH_PASS] => r3dh4t
    [HTTP_AUTH_PROTOCOL] => imap
    [HTTP_AUTH_LOGIN_ATTEMPT] => 1
    [HTTP_CLIENT_IP] => 192.168.122.1
    [PHP_SELF] => /correo-proxy-auth/auth.php
    [REQUEST_TIME_FLOAT] => 1426175171.8848
    [REQUEST_TIME] => 1426175171
)
* Connection #0 to host 192.168.122.170 left intact
The response it is OK, so the problem certainly is into the auth logic.
(index.php script)

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,257206,257228#msg-257228