Smtp - null response (newbie)

Hi everyone!

I have simple example for sending e-mail on every message that's
received. After e-mail is sent there is output to console "null".
Where is that "null" coming from?


This is simple-email-mule-config.xml

<mule xmlns="http://www.mulesource.org/schema/mule/core/2.0"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:spring="http://www.springframework.org/schema/beans"
        xmlns:smtp="http://www.mulesource.org/schema/mule/smtp/2.0"
        xmlns:email="http://www.mulesource.org/schema/mule/email/2.0"
        xmlns:stdio="http://www.mulesource.org/schema/mule/stdio/2.0"
        xsi:schemaLocation="
               http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
               http://www.mulesource.org/schema/mule/core/2.0
http://www.mulesource.org/schema/mule/core/2.0/mule.xsd
               http://www.mulesource.org/schema/mule/smtp/2.0
http://www.mulesource.org/schema/mule/smtp/2.0/mule-smtp.xsd
               http://www.mulesource.org/schema/mule/email/2.0
http://www.mulesource.org/schema/mule/email/2.0/mule-email.xsd
               http://www.mulesource.org/schema/mule/stdio/2.0
http://www.mulesource.org/schema/mule/stdio/2.0/mule-stdio.xsd">

        <model name="MailExample">
                <service name="helloService">
                        <inbound>
                                <stdio:inbound-endpoint system="IN" />
                        </inbound>
                        <outbound>
                                <outbound-pass-through-router>
                                        <smtp:outbound-endpoint
name="EMail" host="smtp.example.com"
                                                port="25"
to="mail@..." from="mule@..."
                                                subject="Mule e-mail">
                                        </smtp:outbound-endpoint>
                                </outbound-pass-through-router>
                        </outbound>
                </service>
        </model>

</mule>


This is output (part):

DEBUG new copy of message for
Thread[connector.smtp.0.dispatcher.1,5,main]
DEBUG Connecting: SmtpMessageDispatcher{this=dada24,
endpoint=smtp://smtp.example.com:25, disposed=false}
DEBUG MuleSession local properties =============
DEBUG mail.smtp.rsetbeforequit: true
DEBUG mail.debug: true
DEBUG mail.smtp.socketFactory.port: 25
DEBUG mail.smtp.host: smtp.example.com
DEBUG mail.smtp.auth: false
DEBUG skipped 0
DEBUG System global properties =============
DEBUG skipped 52
DEBUG Creating mail session: host = smtp.example.com, port = 25, user =
null, pass = null
INFO  Connected: SmtpMessageDispatcher{this=dada24,
endpoint=smtp://smtp.example.com:25, disposed=false}
DEBUG Applying transformer ObjectToMessage
(org.mule.transport.email.transformers.ObjectToMimeMessage)
DEBUG Object before transform:
org.mule.transport.DefaultMessageAdapter/org.mule.transport.DefaultMessa
geAdapter@3aff84{id=d32fda3e-41fe-11dd-8a94-db52a627ed08,
payload=java.lang.String,
correlationId=d32fda3e-41fe-11dd-8a94-db52a6...
DEBUG Constructing email using:
To: mail@...: mule@...: nullBCC: nullSubject: Mule
e-mailReplyTo: nullContent type: text/plainPayload type:
java.lang.StringCustom Headers: {}
DEBUG Object after transform: javax.mail.internet.MimeMessage@1f08ed8
DEBUG The transformed object is of expected type. Type is: MimeMessage
DEBUG Email message sent with subject'Mule e-mail' sent- , From:
mule@... , To: mail@... , Cc:  , Bcc:  , ReplyTo:
mule@...

null



Regards,
Denis

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