Record types
A supplies IPv4, AAAA IPv6, CNAME an alias. MX identifies mail servers; TXT supports verification and email-security settings.
FinFly Explains / IT
DNS records route websites and email
DNS stores domain information for different services. A working website does not prove that email is configured correctly.
Cached answers
TTL governs caching time. Some users may still receive an old answer after a change.
FinFly practice
Preserve existing records before a move and test website, incoming and outgoing mail separately.
Method
Primary sources
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