Enable DNSSEC: step-by-step guide by registrar
DNSSEC protects your visitors from DNS spoofing. This guide covers step-by-step activation for the 6 most popular registrars, with instant verification.
Articles - Page 7
February 2026
End of Basic Auth SMTP on Microsoft Exchange Online: timeline, 550 5.7.30 error, and migration guide
Microsoft is retiring Basic authentication for SMTP AUTH on Exchange Online. Revised timeline, 550 5.7.30 error, OAuth alternatives, HVE, Graph API, and step-by-step migration checklist.
NIST 2025 password recommendations: what's changed
The NIST has rewritten its password rules. No more mandatory rotation, no more complexity requirements. A complete breakdown of SP 800-63B-4 with a step-by-step compliance plan.
Passphrase vs password: which one is actually safer?
A 16-character random password or a 5-word dice-generated phrase? A technical comparison with entropy calculations, use cases, and practical recommendations.
IPv6 subnets: understanding /48, /56, and /64
Which IPv6 prefix should you use for your network? Detailed comparison of /48, /56, and /64 sizes with a table, decision tree, and real-world examples.
Passkeys vs passwords: should you ditch your passwords in 2025?
Google, Apple, and Microsoft are pushing passkeys as the replacement for passwords. But are they ready for widespread use? Technical comparison, benefits, limitations, and transition strategy.
Port 25 blocked: diagnosis and solutions by hosting provider
Port 25 is blocked by most cloud providers and ISPs to fight outbound spam. Here's how to diagnose the block and restore your sending capability.
