Publish your area’s DMARC report to forestall phishing and spoofing. For those who’re employing a shared IP account from the company like SendGrid, don’t setup DKIM and DMARC. It forces your mail streams to own “area alignment” that could potentially cause your emails to fail authentication and begin bouncing. https://it-support67571.theblogfairy.com/26510272/a-secret-weapon-for-ssl-certificate