Deep Security Inspection
A syntax-valid DKIM record can still be fundamentally insecure. We inspect your published record for dangerous testing flags (`t=y`), weak hash allowances, permissive granularity, and cryptographic weakness.
DKIM Tools
Uncover hidden vulnerabilities in your DKIM configuration. Audit your cryptographic strength, detect dangerous testing flags (t=y), expose weak hash allowances, and receive a strict A-F security grade to ensure ultimate spoofing protection.
A syntax-valid DKIM record can still be fundamentally insecure. We inspect your published record for dangerous testing flags (`t=y`), weak hash allowances, permissive granularity, and cryptographic weakness.
Syntax validation proves a record is formatted correctly. Security inspection proves it's actually protecting your domain against spoofing and phishing attacks.
t=y tag active long after setup. This tells receiving servers to effectively ignore DKIM failures, leaving your domain completely unprotected.sha1 or is missing the h= tag (which defaults to allowing both sha1 and sha256), attackers could exploit hash collisions. We flag this vulnerability.t=s). This is a best practice that prevents unauthorized signing on subdomains.p= tag to determine your exact RSA key length. Keys smaller than 1024-bit trigger a critical security alert.g= tag is missing or set to *, any user with access to your mail server can sign for any email address. We inspect this parameter for strict security policies.Your feedback has been submitted successfully. We appreciate your help in improving our tools.