Namecheap dashboard: Domain List → Manage → Advanced DNS → Add New Record. Type = TXT Record; Host = @ for the root domain, or _dmarc, mail._domainkey, etc. for subdomains; Value = the full record content; TTL = Automatic. Save. Namecheap DNS propagates within 30 minutes typically. For DKIM records over 255 characters, Namecheap accepts them as a single string — no manual splitting needed. Verify the published record with the DNS query tool.
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How do I add a TXT record in Namecheap?
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DNS Record Types Explained
DNS records are the building blocks of how the internet resolves domain names to servers. Each record type has a specific job: routing web traffic, delivering email, proving domain ownership, or preventing spoofing.