Diagnosing SSL, DNS, and Email Issues by Layer

SSL, DNS, and email failures often appear together after a domain migration, but they are separate systems. A layered checklist avoids changing unrelated records while trying to fix one symptom.For DNS, verify authoritative nameservers and query the relevant A, AAAA, CNAME, MX, and TXT records. For SSL, inspect the certificate actually served by the public endpoint, including hostname coverage and...