ERROR: Could not send email as a part of the post-build publishers.

[NIGHIL VADAKKAN]

Please help me to resolve this. I am not able to sent failure email notification as a part of post build action

Email was triggered for: Failure
Sending email for trigger: Failure
Sending email to: nigh...@microsemi.com
ERROR: Could not send email as a part of the post-build publishers.
javax.mail.MessagingException: [EOF]
	at com.sun.mail.smtp.SMTPTransport.issueCommand(SMTPTransport.java:2023)
	at com.sun.mail.smtp.SMTPTransport.helo(SMTPTransport.java:1440)
	at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:644)
	at javax.mail.Service.connect(Service.java:317)
	at javax.mail.Service.connect(Service.java:176)
	at javax.mail.Service.connect(Service.java:125)
	at javax.mail.Transport.send0(Transport.java:194)
	at javax.mail.Transport.send(Transport.java:124)
	at hudson.plugins.emailext.ExtendedEmailPublisher.sendMail(ExtendedEmailPublisher.java:306)
	at hudson.plugins.emailext.ExtendedEmailPublisher._perform(ExtendedEmailPublisher.java:284)
	at hudson.plugins.emailext.ExtendedEmailPublisher.perform(ExtendedEmailPublisher.java:236)
	at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
	at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:782)
	at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:754)
	at hudson.model.Build$BuildExecution.cleanUp(Build.java:192)
	at hudson.model.Run.execute(Run.java:1649)
	at hudson.model.Run.run(Run.java:1551)
	at com.tikal.jenkins.plugins.multijob.MultiJobBuild.run(MultiJobBuild.java:63)
	at hudson.model.ResourceController.execute(ResourceController.java:88)
	at hudson.model.Executor.run(Executor.java:246)
Finished: FAILURE