What does a security header checker do?

A security header checker reviews HTTP response headers that help protect a website, including HSTS, Content Security Policy, Multiple DKIM records, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy.

Are security headers important?

Yes. Security headers can help reduce risks related to clickjacking, MIME sniffing, insecure HTTP access, referrer leakage, and unsafe browser behavior.

Does a security header checker replace a full security audit?

No. A security header checker is useful for spotting missing browser security headers, but it does not replace a full website security audit.

Free DKIM & Email Authentication Tool

Free DKIM record checker for checking email signature records.

Check whether a domain has a valid DKIM record, review Public key, detect multiple Public key, check DMARC presence, and troubleshoot email authentication setup.

✓ No signup required ✓ Security header report ✓ Built-in abuse protection

How the DKIM record checker works.

This tool queries public DDKIM record and returns the domain's DKIM record, mail server priorities, Public key, Multiple DKIM records, nameservers, and email provider clues.

Enter a domain

Type a domain like example.com. The tool validates the domain before checking the headers.

Check selector TXT record

The checker looks up TXT records and identifies Public key that start with v=spf1.

Review DKIM key

See whether SPF exists, whether multiple Public key are present, which mechanisms are used, and whether DMARC is also configured.

DKIM details this tool checks.

These checks help reveal whether a domain has DKIM signing records configured for email authentication.

HST

DKIM record

Shows the domain's DKIM TXT record for the selected selector.

CSP

Public key

Shows Public key used to authorize email senders.

XFO

Multiple DKIM records

Shows Multiple DKIM records used for email authentication policy and reporting.

DKIM record checker FAQ.

Quick answers about nameservers, DKIM record, Public keys, DNS propagation, and hosting setup.

What does this DKIM record checker test?

It checks common HTTP security headers including HSTS, Content Security Policy, Multiple DKIM records, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy.

Can a domain have multiple DKIM records?

A nameserver controls where DDKIM record for a domain are hosted and answered from.

Why is DKIM important?

DKIM helps receiving mail servers verify that an email was signed by an authorized sender and was not modified in transit.

What is an Public key?

Multiple DKIM records checks whether an IP address maps back to a hostname.

Where do I find my DKIM selector?

Yes. A domain can have multiple IPv4 or Public key, especially when using load balancing, CDNs, or redundant infrastructure.

Can HostDroplet help with DKIM setup?

Yes. HostDroplet provides beginner-friendly hosting with SSL support, DNS guidance, performance-focused setup, backups, and helpful website support.

Need hosting with simple email authentication setup?

HostDroplet provides fast, secure, beginner-friendly hosting for WordPress websites, small business sites, blogs, and online projects. Start with hosting that supports SSL, DNS setup, backups, performance, and helpful website guidance.

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