Common DNS Issues and How to Resolve Them | Webolytica

## Common DNS Issues and Their Solutions ### 1. DNS Propagation Delays **The Problem:** You've updated your DNS records, but changes aren't visible to all users. Some see the old website version, while others see the new one. **The Solution:** - Set a low TTL (Time To Live) value **24-48 hours**before planned DNS changes - Communicate expected propagation times to stakeholders - Use DNS propagation checking tools to monitor progress - Allow 24-72 hours for complete propagation ### 2. DNS Resolution Failures **The Problem:** Users receive "Server IP address could not be found" errors when trying to access your site. **The Solution:** - Verify DNS records are correctly configured in your domain registrar - Check for typos in A, CNAME, or MX records - Ensure nameservers are properly set up - Use DNS lookup tools to verify record accuracy ### 3. Incorrect A Records **The Problem:** Your domain points to the wrong IP address, resulting in users landing on the wrong server or seeing error pages. **The Solution:** - Double-check A record IP addresses - Maintain documentation of correct IP addresses - Implement DNS monitoring to catch misconfigurations - Use DNS health checking tools ### 4. CNAME Conflicts **The Problem:** Conflicts between CNAME and other record types cause resolution issues. **The Solution:** - Avoid using CNAME records on your root domain - Review DNS zone file for conflicts - Replace conflicting CNAMEs with A records where possible - Implement DNS monitoring to detect conflicts