For a time, I had a server with an issue where the IIS SMTP virtual server stopped due to an error. My usual automatic checks for stopped Windows services didn’t pick this up because the Windows service continued to run, even though the SMTP virtual server had stopped.
This caused some internal emails to be delayed. It was easy enough to start the virtual server again, but better to put a script in place to check the status and start the SMTP virtual server if necessary.
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