ERROR IN SERVER CONSOLE if configure mail server

[ssprasad.e]

my mail-service.xml:

----------------------------

<?xml version="1.0" encoding="UTF-8"?>
<!-- $Id: mail-service.xml 62349 2007-04-15 16:48:15Z [e-mail] $ -->
<server

  <!-- ==================================================================== -->
  <!-- Mail Connection Factory                                              -->
  <!-- ==================================================================== -->

  <mbean code="org.jboss.mail.MailService" name="jboss:service=OpenKM">
    <attribute name="JNDIName">java:/mail/OpenKM</attribute>
    <attribute name="User">shyamsunder.elakapalli</attribute>
    <attribute name="Password">123</attribute>
    <attribute name="Configuration">
      <!-- A test configuration -->
      <configuration>
        <!-- Change to your mail server prototocol -->
        <property name="mail.store.protocol" value="pop3"/>
        <property name="mail.transport.protocol" value="smtp"/>
  
        <!-- Change to the user who will receive mail  -->
        <property name="mail.user" value="[e-mail]"/>
  
        <!-- Change to the mail server  -->
        <property name="mail.pop3.host" value="mail.tsbcorp.com"/>
  
        <!-- Change to the SMTP gateway server -->
        <property name="mail.smtp.host" value="mail.tsbcorp.com"/>
        <property name="mail.smtp.starttls.enable" value="true" />
        <property name="mail.smtp.socketFactory.class" value="javax.net.ssl.SSLSocketFactory" />
           <!-- The mail server port -->
        <property name="mail.smtp.port" value="25"/>
        <property name="mail.smtp.socketFactory.port" value="25" />
           <!-- Change to the address mail will be from  -->
        <property name="mail.from" value="[e-mail]"/>
        <property name="mail.smtp.user" value="[e-mail]"/>
        <property name="mail.smtp.password" value="123"/>
        <property name="mail.smtp.auth" value="true"/>
           <!-- Enable debugging output from the javamail classes -->
        <property name="mail.debug" value="false"/>
      </configuration>
    </attribute>
    <depends>jboss:service=Naming</depends>
  </mbean>

</server>

exception is the console

-----------------------------------

13:51:07,218 ERROR [STDERR] javax.mail.MessagingException: Exception reading response;
  nested exception is:
    javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
13:51:07,218 ERROR [STDERR]     at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:1462)
13:51:07,218 ERROR [STDERR]     at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1260)
13:51:07,218 ERROR [STDERR]     at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:370)
13:51:07,218 ERROR [STDERR]     at javax.mail.Service.connect(Service.java:297)
13:51:07,218 ERROR [STDERR]     at javax.mail.Service.connect(Service.java:156)
13:51:07,218 ERROR [STDERR]     at javax.mail.Service.connect(Service.java:105)
13:51:07,218 ERROR [STDERR]     at javax.mail.Transport.send0(Transport.java:168)
13:51:07,218 ERROR [STDERR]     at javax.mail.Transport.send(Transport.java:98)
13:51:07,218 ERROR [STDERR]     at com.openkm.util.MailUtils.send(MailUtils.java:299)

please help me:

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my email: [e-mail]

[jfclere]

It seems you use plaintext instead SSL.