Check SPF records for any domain to verify authorized email senders. View parsed mechanisms, validity status, and troubleshoot email deliverability issues.
The domain only, without https:// or a path.
SPF (Sender Policy Framework) is an email authentication method that helps prevent email spoofing. It works by publishing a DNS TXT record that specifies which mail servers are authorized to send email on behalf of your domain.
When a receiving mail server gets a message claiming to come from your domain, it checks the SPF record to verify the sending server is authorized. This helps protect against phishing and improves deliverability.
| Mechanism | Description |
|---|---|
| include: | Authorize another domain's SPF record |
| a | Allow the domain's A record IP |
| mx | Allow the domain's MX server IPs |
| ip4/ip6 | Allow a specific IP or range |
| -all | Hard fail: reject unauthorized senders |
| ~all | Soft fail: accept but mark suspicious |
Look up MX records for any domain to see mail servers, priorities, and identified email providers.
Look up DKIM records to verify email signing configuration for any domain and selector.
Validate email addresses with syntax checks, domain verification, MX record lookup, and disposable email detection.