By Greg Nowak , 19 May, 2026 NGINX 1.30 changed upstream connection reuse: what to check before you upgrade NGINX 1.30 keeps upstream HTTP connections alive by default. Use this practical audit and rollout plan to upgrade without surprising legacy backends. Tags Nginx backend compatibility Performance Server Operations
By Greg Nowak , 3 December, 2020 Sending Mail from a Linux Server with Postfix: A Reliable, Relay-First Setup Set up Postfix as a secure outbound mail service using an SMTP relay, then test delivery, authentication, DNS, logs, and queue health. Tags Linux Postfix Email Delivery SMTP Relay Server Operations