SMTP Properties will not load on server 2022 in IIS admin mmc snap-in


If you’re like me, you like to keep your lab up to date and Server 2022 is on the list for upgrade. I like to be able to relay mail out of my lab for alerting and some scripting.

If you are getting the error, “MMC has detected an error in a snap-in. It is recommended that you shut down and restart MMC.” when you edit the properties of the SMTP Service; here is your solution:

  • Stop SMTPSVC service [Display Name: Simple Mail Transfer
  • Protocol (SMTP)]
  • Stop IISADMIN service [Display name: IIS Admin Service]
  • Edit “C:\Windows\System32\inetsrv\MetaBase.xml”
  • Find: <IIsSmtpServer Location =”/LM/SmtpSvc/1”
  • Add (Settings are alphabetical): RelayIpList=””
  • Save file
  • Start IISAdmin Service
  • Start SMTPSVC service

As long as the settings “RelayIpList” is present in the file you’ll be fine.

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I'm an IT professional with over 15 years of experience in the IT industry, I've worked in many fields in my career. This blog is to share my experience, tips and tricks.