Certificate Exception on SSL Handshake in our application running in RHEL 5

Hi,

We are getting the below exception suddenly when we try to enable the SSL mode for our application running in RHEL 5 OS. We are not sure about the root cause of this exception. We have verified our certificates. All are looking fine. we also tried re-generating the certificates and valid date extend up to 2022. Please let us know the root cause of this exception. We are using JRE6, OpenSSL 0.9.8x version in our application.
Please let us know if there is any known bug available.

Note: If we change the system date to 2015/2016 then this issue is not occurring.

javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: No name matching localhost found
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1904)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:279)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:273)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1446)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:209)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:913)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:849)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1023)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1332)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1359)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1343)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:559)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1092)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:250)