Publish your area’s DMARC document to avoid phishing and spoofing. For those who’re employing a shared IP account from a company like SendGrid, don’t setup DKIM and DMARC. It forces your mail streams to acquire “area alignment” that could cause your emails to fall short authentication and start bouncing. https://itsupport45440.ampblogs.com/a-review-of-smtp-server-63551185