Seeing the error: "Connection timeout. Job canceled by scheduler." in the Mailboxes randomly. Anyone else seeing this error?
This may be caused by particularly large user mailboxes. I would recommend increasing the Polling Timeout value for this assigned application. It sounds like it's taking longer than the default value to collect all information for the respective user mailboxes.
Polling Timeout on application edit page affects regular polling of basic info (databases, files, performance counters, etc.) which is being collected every 300 seconds by default. While data for "Server mailboxes" component are collected by separate job that is executed once per 24 hours and has also separate setting for job timeout (720 minutes by default). It can be changed globally (not per application) in config file "SolarWinds\Orion\APM\SolarWinds.APM.BlackBox.Exchg.Collector.dll.config" if needed:
Restart of Orion services is needed in order to apply change of this parameter.
The error is stating that you have exhausted the number of WinRM sessions allowed to that server. By default only 5 are allowed on each monitored host, but this limit can be increased easily by following the steps outlined in the KB article available at the link below.
Did you run both of the following two commands as written below on the Exchange server and wait 24 hours to see if it resolved the issue? User mailbox data is collected only once a day, so it will not update immediately.
winrm set winrm/config/winrs @{MaxConcurrentUsers="30 of concurrent users"}
winrm set winrm/config/winrs @{MaxShellsPerUser="30 of shells per user"}
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