As an experienced Linux and Cloud server specialist, I am eager to help you resolve the issues plaguing your Moodle application on the IIS server. With a solid background in network troubleshooting, I have successfully identified and resolved similar problems for numerous clients while working with services like AWS. In fact, during my tenure, I've not only configured but also managed public/private cloud infrastructures utilizing many cloud providers such as AWS, Azure, Rackspace, and more.
Additionally, my expertise in deploying and managing Docker containers, as well as experience with various website and email migrations can be quite invaluable to our troubleshooting process. Understanding the significance of accessibility in remote usage of applications like Moodle - especially during these times when distributed learning is crucial - I would prioritize this project to ensure swift resolution. Moreover, my familiarity with network management including troubleshooting TCP/IP, LAN/WAN networking and experience in monitoring servers through tools like Nagios and Zabbix will facilitate efficient root cause analysis for your issue.