Hi,
I am trying to send notification using Email adapter of Event Publisher. This 
is my output-event-adapter.xml's Email configurations
    <adapterConfig type="email">
        <!-- Comment mail.smtp.user and mail.smtp.password properties to 
support connecting SMTP servers which use trust
        based authentication rather username/password authentication -->
        <property key="mail.smtp.from">safdar.anee...@gmail.com</property>
        <property key="mail.smtp.user">Aneela Safdar</property>
        <property key="mail.smtp.password">*********/property>
        <property key="mail.smtp.host">smtp.gmail.com</property>
        <property key="mail.smtp.port">587</property>
        <property key="mail.smtp.starttls.enable">true</property>
        <property key="mail.smtp.auth">true</property>
        <!-- Thread Pool Related Properties -->
        <property key="minThread">8</property>
        <property key="maxThread">100</property>
        <property key="keepAliveTimeInMillis">20000</property>
        <property key="jobQueueSize">10000</property>
    </adapterConfig> I receive following error upon publishing events.I am 
behind a proxy, is this an issue behind this error or something else?

[2016-10-11 14:57:35,024] ERROR {org.wso2.carbon.event.output.adapter.email.Emai
lEventAdapter} -  Event dropped at Output Adapter 'AlertEmailPublisher' for tena
nt id '-1234', Error in message format, Unknown SMTP host: smtp.gmail.com
javax.mail.MessagingException: Unknown SMTP host: smtp.gmail.com;
  nested exception is:
        java.net.UnknownHostException: smtp.gmail.com
        at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1280)
        at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:37
0)
        at javax.mail.Service.connect(Service.java:297)
        at javax.mail.Service.connect(Service.java:156)
        at javax.mail.Service.connect(Service.java:105)
        at javax.mail.Transport.send0(Transport.java:168)
        at javax.mail.Transport.send(Transport.java:98)
        at org.wso2.carbon.event.output.adapter.email.EmailEventAdapter$EmailSen
der.run(EmailEventAdapter.java:306)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:47
1)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.
java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
.java:615)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.UnknownHostException: smtp.gmail.com
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java
:178)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:579)
        at java.net.Socket.connect(Socket.java:528)
        at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:232)
        at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:189)
        at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1250)
        ... 12 more

Regards, 
Aneela Safdar
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