Binary package “dhis-mx-sendmail-engine” in ubuntu xenial

Dynamic Host Information System - sendmail MX engine

 This package contains a mail relaying service module to be used
 with dhisd release 5 or above and the dynamic DNS module.
 .
 While the DHIS server dhisd retrieves dynamic IP addresses
 from clients, this module allows the server to deliver messages
 that were previously queued for the newly online host.