One of the bad things about the Exchange MP it is uses a broadly scoped script based discovery (and it's a complex script, at that) that targets Windows Server. So it runs on every server every four hours. Kevin Holman made a little MP that does a simple registry discovery into a seed class that, via override, limits the servers the script runs on. It's great, but I wanted one that was sealed, so it doesn't show up for overrides and nobody mucks it up. I tried running fastseal on his XML, but it didn't work because of the way he coded the overrides. So I just wrote my own that's sealed. Enjoy!
Download link: http://www.avianwaves.com/Tech/Tools/ManagementPacks/Exchange2013SeedDiscovery.zip