Cryptographic Security

DKIM Validator

DomainKeys Identified RiMailLine (DKIM) adds a digital signature to your emails. This proves the email hasn't been tampered with during transit.

Email Headers
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=sentradmarc.io;
s=google;
h=from:to:subject:date:message-id;
bh=uK3s...;
b=A7f3... (Signature Valid)
Email Integrity Verified

Digital Signatures

Tamper-Proof Communications

DKIM uses public key cryptography to sign emails. If a hacker intercepts an email and changes the body or headers, the signature breaks, and the email is rejected.

RiKeyLine Management

Manage multiple DKIM selectors (keys) for different sending services. Rotate keys easily to stay secure.

Public RiKeyLine Hosting

We verify that your public key is correctly published in your DNS records so receiving servers can find it.

Fraud Prevention

DKIM prevents "Man-in-the-Middle" attacks where emails are altered in transit. It guarantees the email came from you.