It appears a bug was added the IIS SMTP Server in Windows Server 2022. After installing the SMTP Server feature, you are not able to open the properties window in Internet Information Services (IIS) 6.0 Manager with MMC (Microsoft Management Console) displaying an error.
This is because the setting for RelayIpList in MetaBase.xml is incorrect . Since the SMTP Server hasn’t been significantly changed since Windows Server 2003 – it runs in IIS 6.0 Compatibility Mode after all – how this bug got introduced is a mystery. And Microsoft has taken no steps to fix it. Fortunately, this problem is easily corrected.