A domain health scan evaluates your domain's infrastructure, including DNS settings and email protocols (SPF, DKIM, DMARC), to protect against vulnerabilities and secure your brand reputation by stopping scammers from sending fake emails pretending to be you. Using a domain scanner allows you to continuously track these configurations, prevent phishing attacks, and ensure reliable email delivery.
What it is: A published guest list of approved email servers.
How it works: It tells other email providers (like Microsft 365, Outlook, or Gmail) exactly which email services are allowed to send emails using your domain name.
The Analogy: It is like the front-desk security guard who checks if a delivery truck is on the official approved list before letting it in.
What it is: A hidden digital signature attached to your emails.
How it works: It adds a special cryptographic code to every message you send. The receiving email server uses your public key to verify that the email truly came from you and was not changed or hacked along the way.
The Analogy: It is like a tamper-proof wax seal on a paper envelope; if the seal is broken or missing, the recipient knows someone messed with the letter.
What it is: The boss that links SPF and DKIM together and sets the final rules
How it works: It tells receiving servers what they should do if an email fails the SPF or DKIM checks. You can tell them to let it through anyway, throw it in the spam folder, or block it entirely. It also sends you reports about who is trying to use your domain name.
The Analogy: It is the instruction manual given to the post office telling them whether to deliver a suspicious letter, hide it, or shred it completely.
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