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Server Operations

NGINX 1.30 and upstream connection reuse: what to check before upgrading

Illustrated infographic summarizing: NGINX 1.30 changed upstream connection reuse: what to check before you upgrade

NGINX 1.30 reuses HTTP backend connections by default. Audit inherited settings, test older applications, and roll out with clear monitoring and a rollback path.

Sending Mail from a Linux Server with Postfix: A Practical SMTP Relay Setup

Illustrated infographic summarizing: Sending Mail from a Linux Server with Postfix: A Reliable, Relay-First Setup

Configure Postfix with an authenticated SMTP relay, verify TLS and sender DNS, and test the full delivery path for business applications and server alerts.