> That might be my one suggestion, sign up for them on behalf of your domain and see if you get any reports; I didn't, 'too small. I had the same issue, what I

> That might be my one suggestion, sign up for them on behalf of your domain and see if you get any reports; I didn't, 'too small. I had the same issue, what I found though is that DMARC reports give at least some insight into the process, but that's about all the information I've managed to get from Google.