Email Security Checker

Test and interpret SPF, DKIM, and DMARC records for any domain

Checking email security records...

Results for {{ resolvedDomain }}

Records Found

No record found for this domain.

DKIM (DomainKeys Identified Mail)

Selectors Checked: {{ results.dkim.selectorsChecked.join(', ') }}

Selector: `{{ selector }}`

{{ results.dkim.records[selector] }}

No DKIM records found for common selectors.

This tool checks {{ results.dkim.selectorsChecked.length }}+ common DKIM selectors including default, selector1, selector2, google, mail, dkim, s1, s2, k1, k2, email, mx, and many email service provider-specific selectors. Not finding a DKIM record does not mean the domain doesn't use DKIM. The domain may be using:

A custom selector name that's not in our common list
A different selector naming convention
Multiple selectors for different purposes
A service-specific selector (e.g., specific to their email provider)

To verify DKIM: Check the email headers of a message sent from this domain. Look for the "DKIM-Signature" header, which will contain the selector name (e.g., "s=selector1"). Then check for a TXT record at selector1._domainkey.{{ resolvedDomain }} (replace "selector1" with the actual selector from the email header).

SPF (Sender Policy Framework)

{{ results.spf.found ? (results.spf.valid ? 'Valid' : 'Invalid') : 'Not Found' }}

{{ results.spf.record }}

Parameter Analysis:

`{{ param.qualifier || '+' }}{{ param.type }}` `{{ param.type }}` ({{ param.values.length }} entries) = {{ param.value }} ({{ param.value }})

{{ val }}

Qualifier: {{ param.qualifier }} (Pass - default) (Fail - reject) (SoftFail - mark as suspicious) (Neutral - no policy)

{{ option.value }} - {{ option.description }}

No SPF record found for this domain.

DMARC (Domain-based Message Authentication, Reporting & Conformance)

{{ results.dmarc.found ? (results.dmarc.valid ? 'Valid' : 'Invalid') : 'Not Found' }}

{{ results.dmarc.record }}

Parameter Analysis:

`{{ param.tag }}` = {{ param.displayValue || param.value }} {{ param.badge }}

{{ option.value }} - {{ option.description }}

No DMARC record found for this domain.

DMARC records are typically published at _dmarc.{{ resolvedDomain }}