@scottishlass spend time with ntfs permissions to create ACLs allowing you access to the old version of Windows and delete it
Use #powershell and the cmdlets in the NTFSSecurity module from the #psgallery.
I've updated my MailPolicyExplainer #PowerShell module. Now, it can evaluate #SPF records recursively, counting how many #DNS lookups all of those "include" tokens consume. Does your SPF record return a PermError? Try the new `-Recurse` parameter and find out!
Of course, it still checks the usual #email things: #DKIM, #DMARC, #BIMI, #DANE, #DNSSEC, #MTASTS, #NullMX records, and #IPv4 and #IPv6 reachability. Version 1.3.0 is now live in #PSGallery and on #GitHub.
https://www.powershellgallery.com/packages/MailPolicyExplainer/1.3.0