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Setting Up Strict SPF, DKIM, and DMARC Records for Self-Hosted Mail Servers
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1 months ago#1
If you're self-hosting mail notifications or running transactional email dispatchers on your VPS, getting your DNS authentication right is non-negotiable if you want to avoid ending up straight in Gmail spam folders.
You need three solid pillars:
1. SPF (Sender Policy Framework): Explicitly defines which IP addresses are authorized to send mail for your domain.
2. DKIM (DomainKeys Identified Mail): Cryptographically signs your outgoing headers with a private key.
3. DMARC (Domain-based Message Authentication): Tells receiving servers what to do if SPF or DKIM checks fail (e.g., p=reject).
What tools are you using to test and monitor your email deliverability scores?
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