Tech Blog

Step-by-step guide to restrict Webmin access by IP address using GUI, miniserv.conf, UFW, and iptables to protect your server panel from unauthorised access.

Fix Plesk AutoSSL renewal failures — diagnose ACME challenge errors, port 80 blocks, DNS mismatches, redirect conflicts, and rate limits with step-by-step commands.

Plesk email not sending? Diagnose and fix SMTP port blocks, IP blacklisting, SPF/DKIM errors, Postfix queue issues, and PHP mail failures with this complete troubleshooting guide.

Fix Plesk SSL certificate renewal failures: Let's Encrypt ACME challenge errors, port 80 blocked, rate limits, incomplete chain, and external DNS issues. Complete 2026 guide.

Learn how to install and configure CSF (ConfigServer Security & Firewall) in Webmin step by step. Covers port rules, LFD setup, rate limiting, and troubleshooting for web hosting servers.

Fix high TTFB on DirectAdmin servers with step-by-step PHP-FPM tuning, OPcache configuration, Redis object caching, and MySQL optimization to cut page load times dramatically.

Set up Webmin two-factor authentication with Google Authenticator and TOTP. Enforce 2FA for all users, configure backup codes, and combine with IP whitelisting for full security.

Fix the Plesk 'SSL CA is not correct, intermediate certificate missing' error. Step-by-step guide covering Plesk UI, SSH CLI, and the repair tool — with chain verification.

SSL certificate installation cost in 2026 ranges from free to $250+. See real pricing tiers, what's included, and how to avoid overpaying.

Step-by-step guide to fix a blacklisted Plesk mail server IP, remove it from RBLs, and prevent future blacklisting with DKIM, SPF, and DMARC.

Complete guide to cPanel email blacklist removal. Identify which blocklists your IP appears on, fix the root cause in WHM, delist from Spamhaus, Barracuda, and Microsoft, and prevent re-listing.

Learn how to configure cPanel WHM backup retention, compression levels, and disk space checks to prevent full-disk failures on your server.

Fix MySQL slow queries on DirectAdmin. Enable slow query log, use mysqltuner, optimize InnoDB buffer pool and missing indexes. Step-by-step 2026 guide.

Why SaaS startups choose hourly Linux server support over full-time hires in 2026. Pay only for what you use. Get a free consultation today.

Move your website from shared hosting to VPS without downtime. Expert migration guide covering timing, technical steps, DNS strategy, and common mistakes to avoid.

Learn how to install ConfigServer Security & Firewall (CSF) in Webmin step-by-step. Configure rules, LFD, intrusion detection, and country blocking for complete server protection.

Change Webmin's default port 10000 to stop automated brute-force attacks. Step-by-step guide covering port change, firewall update, IP restriction, 2FA, and Fail2Ban.

How to configure Plesk email rate limiting at server, domain, and mailbox levels to prevent outbound spam, protect IP reputation, and stop compromised account abuse.

SaaS billing platforms handle sensitive payment data — see what proper SSL installation and certificate management looks like in 2026.

Set up free Let's Encrypt SSL or install commercial certificates in Webmin with our step-by-step guide. Automate renewals and secure your control panel.

An expired SSL certificate can cost thousands in lost revenue in hours. Learn how to prevent SSL outages on Plesk, automate renewals, and manage multiple domain certificates.

Fix Plesk emails not delivering to Gmail. Step-by-step guide for PTR records, IPv6 issues, DKIM, SPF, DMARC, and Google's 2025 bulk sender requirements.

Plesk server IP blacklisted and emails going to spam? Follow this step-by-step guide to identify the source, remove blacklistings, and prevent it happening again.

A cPanel/WHM backup job stuck at 'In Progress' for hours usually means a frozen pkgacct process. Learn how to diagnose, safely kill, clean up, and prevent it from happening again.