Validates SPF record syntax, detects multiple SPF records, and checks for excessive DNS lookups.
This check goes beyond simply looking for an SPF record. It fetches your domain's SPF (Sender Policy Framework) DNS record and validates it thoroughly. It checks for common mistakes like having multiple SPF records (a domain must only have one), using the dangerously permissive '+all' setting (which allows anyone to send email as your domain), and exceeding the 10 DNS lookup limit (which causes the entire SPF record to fail silently).
SPF records tell email providers which servers are allowed to send emails on behalf of your domain. Think of it as a guest list for your email — only the servers you approve can send mail as 'you.' A properly configured SPF record prevents spammers from impersonating your domain, which protects your brand reputation and improves the delivery rate of your legitimate emails.
A missing or invalid SPF record makes it easy for spammers to send fake emails that appear to come from your domain. This can damage your brand reputation, cause your legitimate emails to be marked as spam, and in severe cases, lead to your domain being blacklisted by email providers entirely.
Run a free audit to see how your site performs on SPF Record Validation and 159 other checks.
Start Free AuditVerifies the validity and configuration of the SSL certificate.
Checks if the site is secured with a valid SSL certificate.
Ensures that HTTP traffic is automatically redirected to HTTPS.
Checks for insecure (HTTP) resources on a secure (HTTPS) page.