Outlook Is Rejecting Mail From Domains Without DMARC: Fix SPF, DKIM, and DMARC on Your VPS
Mail you host on a VPS can silently stop reaching Outlook.com if your domain has no DMARC record. Set up SPF, DKIM, and DMARC in one sitting, verify with dig, and understand the relaxed vs strict alignment that gets it to pass.…
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