I'm trying to configure Jenkins to use zoho smtp server to send emails. It works fine if I use my gmail smtp server but it doesn't work with zoho mail. These are the settings I used in Jenkins.

server: smtp.zoho.com

port: 465

Use SSL: yes

username: myemail@mydomain.com

password: mypassword

I've also got  mail.smtp.starttls.enable=true   set to true

This is the error message I'm getting from Jenkins

Failed to send out e-mail

javax.mail.MessagingException: Can't send command to SMTP host;
  nested exception is:
 java.net.SocketException: Connection closed by remote host
 at com.sun.mail.smtp.SMTPTransport.sendCommand(SMTPTransport.java:2106)
 at com.sun.mail.smtp.SMTPTransport.sendCommand(SMTPTransport.java:2093)
 at com.sun.mail.smtp.SMTPTransport.close(SMTPTransport.java:1184)
 at javax.mail.Transport.send0(Transport.java:197)
 at javax.mail.Transport.send(Transport.java:124)
 at hudson.tasks.Mailer$DescriptorImpl.doSendTestMail(Mailer.java:514)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:606)
 at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:298)
 at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:161)
 at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:96)
 at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:120)
 at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
 at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:728)
 at org.kohsuke.stapler.Stapler.invoke(Stapler.java:858)
 at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:248)
 at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
 at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:728)
 at org.kohsuke.stapler.Stapler.invoke(Stapler.java:858)
 at org.kohsuke.stapler.Stapler.invoke(Stapler.java:631)
 at org.kohsuke.stapler.Stapler.service(Stapler.java:225)