General V8

I've recently set up everything on SPF, DKIM, DMARC and TLS with a view to try and control the use of my email domain and I'm getting lots of reports that make no sense to me. I'm seeing lots of email reports from google and amazonses, some showing the emails originated from my vpop3 server, some show they originate from google or amazon themselves. I've started to use a DMARC analyser to try and work out where they are all coming from and why, including making sure I have both the rua and ruf...

I have followed all the instructions for moving vpop3 enterprise (latest) from an old windows 2008 r2 server to a new windows 2019 server. All updates installed. Everything installed correctly without errors. The dbrestore completed correctly. However, when trying to start vpop3 service it stays in a "start pending" status (delayed start) for over 20 minutes and nothing happens. US phone number (Eastern Standard Time) is 937-236-8029. I still have the old server up so I started the service...