NXDOMAIN Error (DNS_PROBE_FINISHED_NXDOMAIN): How to Fix It
NXDOMAIN means DNS found no record for the domain. Learn the troubleshooting order for visitors and site owners, the commands that help, and when to leave the fix to your hosting provider.
Web
Guides on web design, getting a website built, speed, user experience and technical foundations.
300 posts
Mixed Content Error: What It Is and How to Fix It
Learn how to find HTTP resources on an HTTPS page in the browser console, fix them in bulk in WordPress, and add CSP and HTTPS redirects, with official sources.
Connection Reset Error (ERR_CONNECTION_RESET): How to Fix It
ERR_CONNECTION_RESET means a TCP RST packet cut your connection. Learn how to tell whether the cause sits on your device, the network or the server, with steps for each role.
WP Mail SMTP Setup: Stop WordPress Emails Going to Spam
If WordPress emails land in spam, change how they are sent. This guide covers SMTP or API, SPF, DKIM, test emails, logging and WooCommerce checks, step by step.
SSL Version or Cipher Mismatch: ERR_SSL_VERSION_OR_CIPHER_MISMATCH Fix
ERR_SSL_VERSION_OR_CIPHER_MISMATCH means your browser and the server share no TLS version or cipher suite. We explain the causes, the diagnosis order and the fixes.
What Is a Mail Transfer Agent (MTA)? How Email Gets Delivered
A mail transfer agent (MTA) moves email from server to server. Learn the MUA, MSA and MDA roles, how SMTP and MX records work, port 25 vs 587, queues and open relay risk.
Email Forwarding: How to Set It Up in cPanel, Gmail, Outlook
cPanel forwarders, Gmail and Outlook rules, domain forwarding, the SPF, DKIM and DMARC risk, SRS and ARC, spam and loop problems, and when an alias works better.
What Is a Catch-All Email Address? Uses, Risks and Alternatives
A catch-all email address collects mail sent to unknown addresses on your domain. Learn the cPanel setup, the spam and backscatter risks, aliases as an alternative and how to switch it off.
cPanel PHP Version: How to Change It (MultiPHP and PHP Selector)
Change the PHP version per domain in cPanel, understand MultiPHP Manager versus PHP Selector, set php.ini limits, and follow an upgrade checklist with testing and rollback.
Outlook Email Setup: IMAP and SMTP for Business Email
Add your business email to Outlook with IMAP and SMTP: ports and encryption, the Microsoft 365 difference, app passwords, authentication and certificate errors.