Microsoft is playing Catch-22 with me

My SMTP mail server is relatively new, and it took a few weeks, but Microsoft has blocked it’s IP address. The non-delivery report (NDR) says this:

For further assistance, please send mail to postmaster.

Care to guess what gets rejected because I’m on their block list? That’s right: and

For what it is worth, I’m currently getting a 9.8 out of 10 on

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