Step-by-step help for your hosting

• Create a WordPress child theme to keep your customisations

  Create a WordPress child theme so theme updates never overwrite your changes: the folder, style.css header, functions.php enqueue, activating it and moving edits over.

  IntermediatecPanel hosting3 min read

• Manage the Exim mail queue in WHM (Mail Queue Manager, root)

  Inspect, deliver and delete messages stuck in the Exim queue on your cPanel server with WHM Mail Queue Manager and command-line tools, and find the source of spam.

  AdvancedWHM2 min read

• Exim Configuration Manager in WHM: essential mail server settings (root)

  Configure the Exim mail server on cPanel & WHM as root: RBL blocklists, SpamAssassin thresholds, sender verification, TLS, smarthost relays and safe defaults.

  AdvancedWHM2 min read

• Scan WordPress databases for malware with Imunify360 (root guide)

  Use the Imunify360 Malware Database Scanner as root to find and clean malicious JavaScript and spam links injected into WordPress databases, with backups and restore.

  AdvancedcPanel server (root)2 min read

• Troubleshoot Softaculous on WHM: licence, missing scripts and failed installs (root)

  Fix common server-side Softaculous problems as root: invalid licence, Softaculous missing in cPanel, outdated script lists, failed installs and stuck auto-upgrades.

  AdvancedWHM2 min read

• Fix SSL certificate warnings in email clients

  Stop certificate warnings in Outlook, Apple Mail and phones: use the correct mail server name, check AutoSSL covers mail subdomains, and pick the right ports and encryption.

  BeginnercPanel hosting3 min read

• Use Cloudflare with SSL on MdmHost: Full (strict) setup

  Set up Cloudflare correctly with MdmHost hosting: choose Full (strict) SSL mode, keep AutoSSL renewing behind the proxy, avoid redirect loops and fix 525 and 526 errors.

  IntermediatecPanel hosting3 min read

• Configure cPHulk brute-force protection in WHM (root guide)

  Set up cPHulk in WHM to stop password guessing on cPanel, WHM, email and FTP: thresholds, whitelisting your IP, country rules and unblocking from SSH.

  AdvancedWHM (root)3 min read

• LiteSpeed WebAdmin console: server-level cache and tuning settings (root guide)

  Use the LiteSpeed WebAdmin console as root to enable the server cache, set the cache storage path, tune connections and PHP LSAPI limits, and restart safely.

  AdvancedcPanel server (root)3 min read

• Check which SSL certificate is installed and when it expires

  Verify an SSL certificate: view issuer, covered names and expiry in the browser, cPanel SSL/TLS Status and the command line, and test the full chain externally.

  BeginnerAll hosting3 min read

• Fix an incomplete SSL certificate chain (missing CA bundle)

  Fix "incomplete chain" and untrusted certificate errors on phones and apps by installing the correct intermediate CA bundle in cPanel, WHM, Plesk or DirectAdmin.

  IntermediateAll hosting3 min read

• How to restore a customer's files, emails or databases with JetBackup as a reseller

  Use JetBackup 5 to restore a customer's whole account, single files, databases or mailboxes from MdmHost's daily backups, from WHM or the customer's cPanel.

  IntermediateReseller hosting3 min read

• HTTP/3 and QUIC on LiteSpeed: what they are and how to check them

  What HTTP/3 and the QUIC protocol are, why LiteSpeed's built-in support makes sites faster on mobile networks, and how to check your site uses HTTP/3.

  IntermediatecPanel hosting with LiteSpeed3 min read

• CloudLinux MySQL Governor explained: database limits on shared hosting

  How CloudLinux MySQL Governor tracks and limits database usage per account, why heavy queries get restricted, and how to fix slow queries that hit the limits.

  AdvancedcPanel hosting with CloudLinux3 min read

• Install, change and delete WordPress themes (directory, ZIP upload or FTP)

  Install a WordPress theme from the official directory, upload a premium theme ZIP or use File Manager, then activate it safely and delete themes you no longer use.

  BeginnerWordPress2 min read

• Install, update, deactivate and delete WordPress plugins

  Add plugins from the directory or a ZIP, install them manually over File Manager, force a reinstall when an update fails, and deactivate or delete plugins cleanly.

  BeginnerWordPress2 min read

• Free AutoSSL or a paid SSL certificate: which do you need?

  Compare MdmHost's free AutoSSL certificates with paid SSL: security, trust, validity, warranty and effort, plus clear cases where a paid certificate is worth it.

  BeginnercPanel hosting3 min read

• Imunify360 WebShield and CAPTCHA pages explained

  Why visitors sometimes see an Imunify360 CAPTCHA or challenge page, how WebShield and the grey list work, and what to do if real visitors or bots you need are challenged.

  BeginnercPanel hosting with Imunify3603 min read

• Fix 403 Forbidden errors caused by ModSecurity (Imunify360 WAF)

  Recognise when the Imunify360 web application firewall blocks a legitimate form or admin action with a 403 error, collect the details and get the rule fixed.

  IntermediatecPanel hosting with Imunify3603 min read

• Blocked by Imunify360? How to check and unblock your IP

  Why Imunify360 blocks IP addresses after failed logins or suspicious traffic, how to tell if you are blocked, how to pass the CAPTCHA and how to get an IP unblocked.

  BeginnercPanel hosting with Imunify3602 min read

Browse by topic

• Getting startedYour first hour with a new server: access, logins and basics.83 guides
• cPanelFiles, databases, email, domains and every cPanel tool, step by step.67 guides
• WHM & resellingWHM, packages, reseller accounts, WHMReseller and running a hosting brand.53 guides
• WordPressInstall, secure, speed up, migrate and fix WordPress sites.49 guides
• Email & webmailMailboxes, webmail, forwarders, spam filters and email delivery.67 guides
• DomainsRegistering, transferring and managing domains and nameservers.27 guides
• SSL certificatesFree AutoSSL, Let's Encrypt, paid certificates and HTTPS.41 guides
• CloudLinuxCloudLinux setup and use: LVE limits, CloudLinux Manager, CageFS and PHP/Node.js selectors.31 guides
• LiteSpeedLiteSpeed Web Server, LSCache and the LiteSpeed Cache plugin: install, settings and tuning.35 guides
• Imunify360Malware scanning, firewall and proactive defence with Imunify360.24 guides
• SoftaculousInstall, update, clone and back up apps with Softaculous.24 guides
• WP SquaredcPanel's WordPress platform: sites, plugins, staging and backups.9 guides
• SitePadBuild and publish websites with the SitePad builder.9 guides
• SitejetDesign, edit and publish sites with the Sitejet builder.9 guides
• WHMResellerAlpha and master resellers with WHMReseller: install, setup and use.12 guides
• VirtFusionInstall, set up and manage VirtFusion: hypervisors, packages, servers and WHMCS integration.28 guides
• VirtualizorManage your VPS with Virtualizor: power, OS reinstall, VNC, IPs and backups.44 guides
• PleskWebsites, email, databases and settings in the Plesk panel.53 guides
• DirectAdminUsers, domains, email and reseller tools in DirectAdmin.41 guides
• WHMCSBilling, automation, products and client management with WHMCS.52 guides
• Control panelscPanel & WHM, Plesk, DirectAdmin and other panels on your VPS.107 guides
• SecurityKeys, passwords, firewalls and keeping a server patched.138 guides
• Networking & DNSIP addresses, reverse DNS, ports and traffic.72 guides
• Websites & appsWeb servers, WordPress, PHP, Node.js, SSL and app hosting.83 guides
• DatabasesMySQL, MariaDB, PostgreSQL, Redis and MongoDB on a VPS.80 guides
• Billing & accountInvoices, renewals, the client area and your account.9 guides
• TroubleshootingWhen something is not working: checks and fixes.127 guides
• Linux VPSSSH, packages, services and everyday Linux administration.265 guides
• Windows VPS & RDPRemote Desktop, Windows Server settings and Admin RDP tips.73 guides
• Docker & DevOpsContainers, Git deploys, automation, monitoring and backups.82 guides