I think it's common as we (a fairly small company) got a similar email. Exact same thing, "No DMARC Record found". Almost certainly automated. We just ignored t

I think it's common as we (a fairly small company) got a similar email. Exact same thing, "No DMARC Record found". Almost certainly automated. We just ignored them. We don't have a bug bounty program and this isn't the Red Cross. The missing DMARC record was on a domain we don't really use anyway.