[syslog-ng] Syslog-ng error while using TSL

Hi I am getting following error while trying to configure TSL in syslogng Error On Client Certificate validation failed; subject='C=IN, ST=KAR, O=orola, CN=12.168.50.192, emailAddress=a@d.com', issuer='C=Generic, ST=Generic, O=Generic, CN=Generic_Int_CA_1', error='unable to get local issuer certificate', depth='0' SSL error while writing stream; tls_error='SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed' I/O error occurred while writing; fd='4', error='Broken pipe (32)' Syslog connection broken; fd='4', server='AF_INET(10.232.165.128:5695)', time_reopen='60' Error on Server SSL error while reading stream; tls_error='SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca' Regards Pramod