Much like the previous chapter, which focused on an issue with a custom application, today's issue comes from the same custom application.
Today, we will be working on an issue reported by an application support team. However, this time the support team was able to provide us with quite a bit of information.
The application we were working on in Chapter 9, Using System Tools to Troubleshoot Applications, now receives messages over port 25
and stores them in a queue directory. Periodically, a job runs to process those queued messages, but the job doesn't seem to be working anymore.
The application support team has noticed quite a large amount of messages backlogged in the queue. However, even though they have been troubleshooting the issue as much as possible, they are stuck and require our assistance.