The following resources are in normal state: Mail resubmission from the Shadow Redundancy Component Mail resubmission from the Message Resubmission component. Inbound mail submission from the Internet Inbound mail submission from Hub Transport servers The following components are disabled due to back pressure: The following resources are under pressure: The resource pressure increased from Medium to High. So look at all the things that it stopped: It wasn’t until we found this warning that we noticed that this was going on:įor my Exchange environment, Bucket Versions were getting to too high a level. If your system is unhappy with the amount of resources available, you’ll have to restart the Transport Service to reduce the monitor’s severity level. If the severity of resource usage gets too high, it will actually STOP mail flow of all kinds. In perfect form, the resource pressure monitor collects information about your environment and will delay mail (called “tarpitting”) until things get back to normal. ResolutionĪdjust or disable Resource Pressure Monitor.
The Transport Service was always On, never stopped. There were no logged errors on the Transport Service.
Once the Transport Service restarted, all mail would push from the Outboxes and mail would work again for a few days. Finally, we narrowed it down the restarting just the Transport Service. Later, we learned that restarting the Topology Service (The service that will restart all of your Exchange Services) fixed the issue.
At first, we found that rebooting the server fixed the issue.