I have not yet had a chance to try it but there's this:
https://domainaware.github.io/parsedmarc/
Currently I use my own Python script to do some basic reporting but would rather pool effort.
this post was submitted on 15 May 2025
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I think parsedmarc is the only active-ish game in town. Most tools like this are going to be hosted SaaS.
FWIW, your domain will most likely eventually get used by spammers and then it'll be an endless string of somewhat expected but unpredictable failures from there on onwards, with no actions you can take to reduce it. It's good to keep an eye on what comes in but I wouldn't invest too much effort into failure alerting.
I've ran email servers for 30 years, I think I got it cased, but thanks for your input.