Java Conviguration for Email Notification on OpenNMS

In OpenNMS, there are several ways for notification. This notification can be configured for such events, for example when one interface is down. In this time I would like to share configuration for email.

Configuration for email is like this:
1. After doing instalation for OpenNMS, here is the file of /etc/opennms/javamail-configuration.properties

################################################################################
# This file is the configuration for the the JavaMailer class. It is used to
# specify the details of the JavaMailer system properties
################################################################################
#
# Properties are defined but commented out indicating the default values.
#

#
# This property defines system sender account.
#
# The default setting is root@[127.0.0.1]
#org.opennms.core.utils.fromAddress=root@[127.0.0.1]

#
# These properties define the SMTP Host.
#
#org.opennms.core.utils.mailHost=127.0.0.1
#org.opennms.core.utils.mailer=smtpsend
#org.opennms.core.utils.transport=smtp
#org.opennms.core.utils.debug=true
#org.opennms.core.utils.smtpport=25
#org.opennms.core.utils.smtpssl.enable=false
#org.opennms.core.utils.quitwait=true
#
# This property controls the use of the JMTA, the default is true
#org.opennms.core.utils.useJMTA=true
#
# These properties define the Mail authentication.
#
#org.opennms.core.utils.authenticate=false
#org.opennms.core.utils.authenticateUser=”opennms”
#org.opennms.core.utils.authenticatePassword=”opennms”
#org.opennms.core.utils.starttls.enable=false

#
# These properties configure message content
#
#org.opennms.core.utils.messageContentType=text/plain
#org.opennms.core.utils.charset=us-ascii

2. In this time, I configure this notification using google mail (gmail). Change the file in the /etc/opennms/javamail-configuration.properties using this file (there are several lines are changed):

################################################################################
# This file is the configuration for the the JavaMailer class. It is used to
# specify the details of the JavaMailer system properties
################################################################################
#
# Properties are defined but commented out indicating the default values.
#

#
# This property defines system sender account.
#
# The default setting is root@[127.0.0.1]
org.opennms.core.utils.fromAddress=root@[127.0.0.1]

#
# These properties define the SMTP Host.
#
org.opennms.core.utils.mailHost=smtp.gmail.com
org.opennms.core.utils.mailer=smtpsend
org.opennms.core.utils.transport=smtp
org.opennms.core.utils.debug=true
#org.opennms.core.utils.smtpport=25
#org.opennms.core.utils.smtpssl.enable=false
#org.opennms.core.utils.quitwait=true
#
# This property controls the use of the JMTA, the default is true
org.opennms.core.utils.useJMTA=true
#
# These properties define the Mail authentication.
#
#org.opennms.core.utils.authenticate=false
#org.opennms.core.utils.authenticateUser=”opennms”
#org.opennms.core.utils.authenticatePassword=”opennms”
#org.opennms.core.utils.starttls.enable=false

#
# These properties configure message content
#
#org.opennms.core.utils.messageContentType=text/plain
#org.opennms.core.utils.charset=us-ascii


3. Restart OpenNMS, and then we can check the notification on our email when some events are happen.