DNS Fix for Website and Email

I'm experiencing issues with both my website and email, which I believe are related to recent changes I made to my DNS settings. I need an expert to diagnose and fix these issues.

Requirements:
- Restore website accessibility
- Ensure email functionality (sending/receiving)
- Correct any misconfigurations in DNS settings

Ideal Skills and Experience:
- Proven experience with DNS management
- Familiarity with troubleshooting website and email issues
- Access to DNS management tools and platforms