SMTP host value being overwritten in OSB while sending emails

I have two proxies within my OSB 11g project-

1. MailSender proxy- used to send emails to the customer. I am actually using Java code to send emails inside this message flow. The parameters to the java code are passed using DVMs.

2. Reprocessing proxy- polls another mailbox for undelivered/bounce back emails.

I have deployed this code in a clustered environment with 2 nodes hosting 2 JVMs (osb servers) each. The MailSender proxy is distributed on each JVM while Reprocessing proxy is(can be) targetted to only one JVM.

The issue I am facing is- whichever JVM this Reprocessing proxy is deployed on, that particular JVM is picking up localhost as the SMTP host (in MailSender proxy) - even though the server name is passed correctly.

Logs for MailSender proxy-

</dynamicValues>"

ServerName="smtp-server.qwerty.com"

fault="<con:fault xmlns:con="http://www.bea.com/wli/sb/context">

  <con:errorCode>BEA-382515</con:errorCode>

  <con:reason>Callout to java method "public static java.lang.String com.twc.sn.SendMail.callEmailService(java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String) throws java.lang.Exception" resulted in exception: Could not connect to SMTP host: localhost, port: 25

1. javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 25;

  nested exception is:

        java.net.ConnectException: Connection refused

        at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1391)

        at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:412)

        at javax.mail.Service.connect(Service.java:288)

        at javax.mail.Service.connect(Service.java:169)

        at javax.mail.Service.connect(Service.java:118)

        at javax.mail.Transport.send0(Transport.java:188)

        at javax.mail.Transport.send(Transport.java:118)

        at com.twc.sn.SendMail.send(SendMail.java:69)

        at com.twc.sn.SendMail.callEmailService(SendMail.java:88)

        at sun.reflect.GeneratedMethodAccessor4529.invoke(Unknown Source)

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

        at java.lang.reflect.Method.invoke(Method.java:597)

        at stages.transform.runtime.JavaCalloutRuntimeStep$1.run(JavaCalloutRuntimeStep.java:183)

Please let me know if someone has faced this issue or knows a solution to this.

Regards,

Tarun