When you start Ossec version 2.6 there is this message:
OSSEC analysisd: Testing rules failed. Configuration error. Exiting. Started ossec-csyslogd... 2012/07/01 21:13:22 ossec-maild: INFO: E-Mail notification disabled. Clean Exit.
This is because in /var/ossec/bin/ossec-control the path of ossec-logtest is wrong.
The location of ossec-logtest is /var/ossec/ossec-logtest which is wrong, ossec-logtest is in /var/ossec/bin/ directory, either you change the ossec-control source code to echo | ${DIR}/bin/ossec-logtest > /dev/null 2>&1; or use a symbolic link ln -s /var/ossec/bin/ossec-logtest /var/ossec/ossec-logtest
cyruslab 
Thank you very much. It will definitely help in exams.
again its showing the same problem…wt to do tell me please.