Tech Blog

Complete guide to excluding files and directories from cPanel/WHM backups using cpbackup-exclude.conf, pkgacct exclusions, and JetBackup — reduce backup size by up to 70%.

A step-by-step server migration checklist for media and streaming companies covering Linux and Windows environments, zero-downtime cutover, DRM, and CDN validation.

Plesk mail queue stuck with deferred emails? Fix every cause: port 25 blocked, Amavis/SpamAssassin down, Postfix misconfiguration, IP blacklisting, and how to flush and force-retry the stuck queue.

Plesk incoming mail rejected with a Spamhaus "open resolver" DNSBL error? Learn the exact cause, how to confirm it, and how to fix it with a free DQS key.

Learn how to set up DKIM, SPF, and DMARC in Plesk to fix email deliverability and stop emails landing in spam. Step-by-step guide.

Step-by-step guide to enabling Webmin 2FA with Google Authenticator or Authy. Harden your control panel login against brute-force attacks in minutes.

Learn how to configure cPanel and WHM backup to Amazon S3 step-by-step. Set up IAM credentials, S3 bucket, encryption, lifecycle rules, and troubleshoot common errors.

Complete Plesk email not sending troubleshooting guide: fix port 25 blocks, Amavis failures, deferred queue errors, transport unavailable, and Postfix configuration issues.

Step-by-step guide to configure SMTP relay in Plesk for SendGrid, Mailgun, and Amazon SES — server-wide and per-domain relay setup, DKIM signing, deliverability testing, and troubleshooting authentication errors.

Learn how to identify blacklisted IPs on a Plesk server, stop the spam source, delist from Spamhaus and other blacklists, and prevent reblacklisting with SPF, DKIM, PTR, and rate limiting.

Harden your Webmin server with Fail2Ban brute force protection, SSH key-only login, IP access restriction, two-factor authentication, and rkhunter rootkit scanning. 2026 guide.

What does managed server support really cost in 2026? Compare pricing models, plans, and what's included before you hire a provider.

What does customer support outsourcing cost for web hosting companies in 2026? Compare pricing models, per-agent rates, and what's included.

A vendor evaluation checklist for choosing a server migration partner for e-commerce stores — zero-downtime, data integrity, and rollback plans.

Fix Plesk Roundcube webmail 500 Internal Server Error with step-by-step diagnosis covering database driver, PHP timezone, session, and reinstall fixes.

Learn how to migrate your Linux server to a new VPS with zero downtime using rsync, DNS TTL tricks, and a proven cutover checklist.

DirectAdmin control panel not loading? Step-by-step fixes for port 2222 issues, 500 errors, update failures, license problems, and login lockouts.

Plesk SMTP authentication failed? Fix 535 errors, wrong port settings, Postfix SASL misconfiguration, and Dovecot auth failures with this complete step-by-step guide.

Fix a stuck Plesk mail queue with step-by-step Postfix diagnostics — covering port 25 blocks, Amavis failures, DNS errors, IP blacklisting, and safe queue flush commands.

Learn how to set up Fail2Ban in Webmin to block brute force attacks. Covers Webmin jail configuration, the native Fail2Ban module, multi-service protection, and IP unblocking.

Fix Plesk's 'SSL CA is not correct. Intermediate certificate missing' error and incomplete certificate chain warnings with step-by-step CA bundle upload instructions and openssl verification commands.

Learn how to assign an SSL certificate to the Plesk mail server and fix IMAP, SMTP, and POP3 certificate errors. Stop the 'can't verify identity' error in email clients.

Step-by-step guide to enabling Redis object cache in DirectAdmin for WordPress. Install Redis, configure security, connect via the Redis Object Cache plugin, and monitor hit rates.

A practical, contract-ready checklist covering monitoring, patching, backups, hardening, scaling, incident response, and SLA terms every SaaS provider should demand from a server management vendor in 2026.