For reasons that aren't important in this question, I cannot use the ECP or the Exchange Shell to get the email address policies. I will be using standard PowerShell. I do know the name of the on-prem Exchange Server, but it's totally impossible for me to use any remote connection or plugin to ascertain something that's really easy to get with a mouse.
I'm sure somewhere tucked away in the schema are the email address policies, and with it the default policy assigned.
Does anyone know where this would be? I can't for the life of me find it using ADSIEdit, and can't think of something unique as a search term for PowerShell.
Thank you
Found it
CanonicalName : domain.local/Configuration/Services/Microsoft Exchange/ Domain Exchange/Recipient Policies/
And for PowerShell users: