Sure, files were improved to include MX, SPF, and DMARC records. I included SPF records allowing IP addresses, but per SPF's RFC, it is possible (and it would be easier and clearer) to determine the web server or the mail server ("a" and "mx" mechanisms), thus even if its A and AAAA records are changed, it wouldn't be necessary to alter the SPF record too. Unfortunately, Google seems to have some unwritten rules against their use, which led me to use the IP4 and IP6 mechanisms. An