One of the biggest advantages of email is how easy it is to operate. But that makes it equally easy for attackers to use your domain to send fake emails or even intercept the ones you send. Email servers normally can’t protect against domain spoofing and emails that have had their content illegally altered. Lucky for you, PowerDMARC’s got it covered.
The digital signature is a failsafe that cannot be decrypted if the email has been intercepted and altered, so the email gets rejected.