Case Studies

Real-world DNS problems, anonymised.

Examples of the types of DNS, mail and hosting issues I resolve for Namibian businesses and service providers.

Email stopped after hosting change

Problem: Website was moved but mail was still expected at the old provider.

Diagnosis: MX and SPF pointed to inconsistent providers.

Fix: Aligned MX, SPF and mail hostnames while preserving web records.

Result: Mail flow restored and DNS zone documented.

Cloudflare SSL loop

Problem: Website showed SSL and redirect errors after Cloudflare was enabled.

Diagnosis: Proxy mode and origin SSL settings were mismatched.

Fix: Corrected proxy/SSL settings and verified origin reachability.

Result: Website loaded consistently over HTTPS.

.com.na nameserver mismatch

Problem: Domain appeared updated at one provider but still resolved old records.

Diagnosis: Registry delegation and DNS provider records were not aligned.

Fix: Identified authoritative nameservers and produced exact change list.

Result: Domain resolved from the intended DNS provider.

Mail going to spam

Problem: Outgoing business mail landed in spam after DNS changes.

Diagnosis: SPF was incomplete and DKIM/DMARC were missing or stale.

Fix: Published correct TXT records and verified authentication.

Result: Mail authentication passed external checks.