How is MainDom configured? Database? And how is it hosted? And is it multi-instance (i.e., "load-balanced")?
> Available options:
>
> "FileSystemMainDomLock"- Available cross-platform, uses lock files written to LocalTempPath to control acquisition of MainDom status.
>
> "MainDomSemaphoreLock" - Windows only, uses a named system Semaphore with a maximumCount of 1 to control acquisition of MainDom status.
>
> "SqlMainDomLock" - Available cross-platform, uses the database to control acquisition of MainDom status.
>
> The default implementation unless configured otherwise is FileSystemMainDomLock.