Trying to configure email in Identity server - wso2

Question

I have configured the email configuration in identity server repository/conf/output-event-adapters.xml with the below settings.
<?xml version="1.0" encoding="UTF-8"?>
< outputEventAdaptersConfig>
< parameter key="mail.smtp.from">name#companyname.com< /parameter>
<parameter key="mail.smtp.host">smtp.companyname.com< /parameter>
<parameter key="mail.smtp.port">25< /parameter>
<parameter key="mail.smtp.starttls.enable">false< /parameter>
<parameter key="mail.smtp.auth">false< /parameter>
<parameter key="mail.smtp.user">name< /parameter>
<parameter key="mail.smtp.password" / >
< /outputEventAdaptersConfig>
but while sending email i am getting the below error
[2019-05-22 06:24:37,892] ERROR
{org.wso2.carbon.event.output.adapter.core.internal.OutputAdapterRuntime}
- Connection unavailable for Output Adopter 'EmailPublish org.wso2.carbon.event.output.adapter.core.exception.ConnectionUnavailableException:
The adapter EmailPublisher failed to connect to the mail server due to
null smtpfrom value
tried the same configuration in axis.xml also. we are using
WSO2 Identity Server 5.5.0
<?xml version="1.0" encoding="UTF-8"?>
< outputEventAdaptersConfig>
< parameter key="mail.smtp.from">name#companyname.com< /parameter>
<parameter key="mail.smtp.host">smtp.companyname.com< /parameter>
<parameter key="mail.smtp.port">25< /parameter>
<parameter key="mail.smtp.starttls.enable">false< /parameter>
<parameter key="mail.smtp.auth">false< /parameter>
<parameter key="mail.smtp.user">name< /parameter>
<parameter key="mail.smtp.password" / >
< /outputEventAdaptersConfig>
[2019-05-22 06:24:37,892] ERROR
{org.wso2.carbon.event.output.adapter.core.internal.OutputAdapterRuntime}
- Connection unavailable for Output Adopter 'EmailPublish org.wso2.carbon.event.output.adapter.core.exception.ConnectionUnavailableException:
The adapter EmailPublisher failed to connect to the mail server due to
null smtpfrom value