Mosquitto for OpenVMS I64 and Alpha

This document provides instructions for installing and configuring Mosquitto 1.6.2 on OpenVMS I64 and Alpha platforms. Mosquitto is an open-source, lightweight MQTT broker used for publish-subscribe messaging. The guide includes details on system requirements, installation procedures using PCSI kits, post-installation tasks such as configuring automatic startup/shutdown, and setting up SYSUAF-based authentication. Additionally, it addresses potential issues related to IPv6 binding and provides recommendations for resource quotas and log file management.