Blog

TLS-RPT tells you when TLS negotiation fails between mail servers on your domain. Most organizations have never enabled it. Here's what you're missing.

The CA/Browser Forum has mandated a phased reduction in TLS certificate validity, reaching a 47-day maximum by 2029. Here's the timeline and impact.

Let's Encrypt and ACME automation make certificate management nearly frictionless. But automation can fail silently, and you won't know until you're down.

A working checklist for renewing TLS certificates without causing an outage. Covers planning, validation, and post-deployment verification.

SPF, DKIM, and DMARC are the three core email authentication standards. Understanding how they work together is essential for business email.

Most certificate outages stem from certificates the ops team didn't know existed. Build a complete inventory using DNS, CT logs, and internal discovery.