Tech Blog

Discover how web hosting companies, agencies, IT firms, and freelancers manage Linux servers with or without cPanel — and why CloudHouse is the trusted choice.

Plesk email going to spam? Fix DKIM signing, SPF record errors, DMARC configuration, PTR reverse DNS, and IP blacklistings with this step-by-step guide.

Step-by-step guide to migrating a cPanel server to a new host without downtime. Covers WHM Transfer Tool, rsync, email migration, DNS cutover, and post-migration verification.

Resolve DirectAdmin SMTP 550 errors including 'No such recipient here', relay not permitted, sender verify failed, and authentication required. Step-by-step Exim fixes.

Eliminate Plesk greylisting email delays. Configure whitelist rules for Office 365, adjust retry intervals, or disable greylisting. Step-by-step sysadmin guide.

Install Let's Encrypt SSL on Webmin step-by-step. Configure auto-renewal, fix miniserv.pem errors, and enable HTTPS for your Webmin panel. 2026 guide.

Force HTTPS redirect in Plesk for Apache and Nginx step-by-step. Fix redirect loops, broken layouts, and mixed content errors. Complete 2026 guide.

Is your cPanel server IP on a blacklist? Follow this step-by-step 2026 guide to identify blacklists, submit delisting requests, and prevent re-blacklisting.

Plesk Let's Encrypt not working? Fix ACME challenge failures, SSLCertificateFile missing errors, wrong certificate served, and renewal failures on nginx and Apache.

Step-by-step guide to install and configure PHP OPcache in DirectAdmin using CustomBuild. Includes memory sizing, multi-PHP-version setup, and performance verification.

Fix Plesk HTTPS errors — 502 Bad Gateway, ERR_CONNECTION_REFUSED, and SSL handshake failures on all sites. Step-by-step for CentOS/RHEL and Debian/Ubuntu with exact commands.

SSL certificate not working after server migration? Fix private key mismatches, broken certificate chains, Cloudflare SSL mode errors, and port 443 issues with this step-by-step guide.

Master DirectAdmin backups and disaster recovery. Learn admin and user-level backup strategies, remote backup configuration, and one-click restoration.