Documentation
Liferay provides a rich store of resources and knowledge to help our community better use and work with our technology.
POP
Set this to true to enable polling of email notifications from a POP server. The user credentials are the same used for SMTP authentication and are specified in the mail/MailSession configuration for each application server.
pop.server.notifications.enabled=false
Set the interval on which the POPNotificationsMessageListener will run. The value is set in one minute increments.
pop.server.notifications.interval=1
Set this property to create a special MX subdomain to receive all portal related email (e.g. events.liferay.com). This means configuring a default inbox for the domain and receiving all emails into that inbox.
This approach may not be allowed for some organizations. If you cannot use the subdomain approach, unset this value and Liferay will use the replyTo address specified in the portlet preferences.
pop.server.subdomain=events