IIS Tracking Website Error Resolution

I'm seeking an expert to diagnose and resolve a persistent error on my tracking website, which runs on a dedicated server and uses IIS.

Error Details:
- 751 ERROR: ServiceManager: The remote name could not be resolved: '*******.co.za'
- The error occurs consistently.

Requirements:
- Expertise in IIS and dedicated server management
- Strong troubleshooting skills
- Experience with DNS issues

Please only respond if you have relevant experience.