The problem
When a service works by IP but not hostname, DNS resolution is a prime suspect.
Recommended approach
Check the DNS record, client DNS settings, caching and split-DNS requirements.
Step-by-step checklist
- Test name resolution from the affected client.
- Compare with a known-good client.
- Check the authoritative/internal record.
- Flush cache only after confirming the record.
- Verify the application is listening on the expected address.
MY WAY IT SERVICES
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