Agent Dont communicate with server

Hi, 

My principal error is with Agent 2.4 and server 2.5 doesnt communicate :

COM SERVER => Initializing cURL library for sendRequest

COM SERVER => Using cURL with server authentication

COM SERVER => Disabling cURL proxy support

COM SERVER => Disabling cURL SSL server validation support

COM SERVER => Sending HTTP Post request to URL <http://soportesrv/ocsinventory>

COM SERVER => HTTP Post response received <HTTP Status Code #404>

COM SERVER => Cleaning cURL library

ERROR *** AGENT => Failed to send Prolog <HTTP Status Code #404>

AGENT => Unloading communication provider

AGENT => Unloading plug-in(s)

AGENT => Execution duration: 00:00:01.

I read in this forum that i have to enable two sites with a2ensite that came in rar file , but it doesnt work , i enable it , but doesnt work 

I appreciate your help to solve this problem i tried to resolve this too much days,

Thanks in advanced

PD: Where i can email the logs?