Use WSO2 EI to send an email - wso2

Question

I use WSO2 EI to send an email but I get an error message below.
2019-01-24 17:53:12,353 To:
/services/SimpleProxy2.SimpleProxy2HttpSoap12Endpoint, WSAction:
urn:mediate, SOAPAction: urn:mediate, MessageID:
urn:uuid:06891289-318c-49b1-83bd-bc71c7590078, Direction: request,
MESSAGE = Executing default 'fault' sequence, ERROR_CODE = 0,
ERROR_MESSAGE = Unexpected error during sending message out, Envelope:
Hello
WSO2.....!
2019-01-24 17:53:12,347 Suspending endpoint : AnonymousEndpoint with address mailto:zoehuang#asqimacau.com - current suspend duration
is : 30000ms - Next retry after : Thu Jan 24 17:53:42 CST 2019
2019-01-24 17:53:12,347 Endpoint : AnonymousEndpoint with address mailto:zoehuang#asqimacau.com will be marked SUSPENDED as it failed
2019-01-24 17:53:12,308 Unexpected error during sending message out
2019-01-24 17:53:12,302 Error generating mail message
2019-01-24 17:53:12,284 Error creating mail message or sending it to the configured server
2019-01-24 17:51:26,988 Unable to sendViaPost to url[http://asqi-vm:8280/services/SimpleProxy2.SimpleProxy2HttpSoap12Endpoint]
2019-01-24 17:50:27,008 This engine will expire all callbacks after GLOBAL_TIMEOUT: 1200 seconds, irrespective of the timeout
action, after the specified or optional timeout
2019-01-24 17:50:26,990 To: /services/SimpleProxy2.SimpleProxy2HttpSoap12Endpoint, WSAction:
urn:mediate, SOAPAction: urn:mediate, MessageID:
urn:uuid:06891289-318c-49b1-83bd-bc71c7590078, Direction: request,
Envelope: Hello
WSO2.....!
configuration file setting in EI_HOME\conf\axis2\axis2.xml
<transportSender name="mailto" class="org.apache.axis2.transport.mail.MailTransportSender">
<parameter name="mail.smtp.host">xxxx-mail1.com</parameter>
<parameter name="mail.smtp.port">465</parameter>
<parameter name="mail.smtp.starttls.enable">true</parameter>
<parameter name="mail.smtp.auth">true</parameter>
<parameter name="mail.smtp.user">xxxxx#xxxxx.com</parameter>
<parameter name="mail.smtp.password">password</parameter>
<parameter name="mail.smtp.from">xxxxx#xxxxx.com</parameter>
</transportSender>
My proxy service code in EI
<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
name="SimpleProxy2"
startOnLoad="true"
statistics="disable"
trace="disable"
transports="http,https">
<target>
<inSequence>
<property name="messageType"
scope="axis2"
type="STRING"
value="text/html"/>
<property name="ContentType" scope="axis2" value="text/html"/>
<property name="Subject" scope="transport" value="Testing ESB"/>
<property name="OUT_ONLY" value="true"/>
<property name="FORCE_SC_ACCEPTED" scope="axis2" value="true"/>
<payloadFactory media-type="xml">
<format>
<ns:text xmlns:ns="http://ws.apache.org/commons/ns/payload">$1</ns:text>
</format>
<args>
<arg value="Hello WSO2.....!"/>
</args>
</payloadFactory>
<log level="full"/>
<send>
<endpoint>
<address uri="mailto:xxxxx#xxxxx.com"/>
</endpoint>
</send>
<log level="full"/>
</inSequence>
<outSequence>
</outSequence>
</target>
<description/>
</proxy>
I expected I can use WSO2 EI to send an e-mail and receive an e-mail.

Answer 1

If you can refer to the documentation in [1] we can observe the following sample configuration for the mail transport
<transportSender name="mailto" class="org.apache.axis2.transport.mail.MailTransportSender">
<parameter name="mail.smtp.host">smtp.gmail.com</parameter>
<parameter name="mail.smtp.port">587</parameter>
<parameter name="mail.smtp.starttls.enable">true</parameter>
<parameter name="mail.smtp.auth">true</parameter>
<parameter name="mail.smtp.user">synapse.demo.0</parameter>
<parameter name="mail.smtp.password">mailpassword</parameter>
<parameter name="mail.smtp.from">synapse.demo.0#gmail.com</parameter>
</transportSender>
Please refer to the following parameters in your configuration. In the following can you please modify the smtp.user value to xxxxx (synapse.demo.0 in above) rather than xxxxx#xxxxx.com
<parameter name="mail.smtp.user">xxxxx#xxxxx.com</parameter>
<parameter name="mail.smtp.from">xxxxx#xxxxx.com</parameter>
[1]-https://docs.wso2.com/display/EI640/MailTo+Transport