SPF, DKIM, DMARC Setup for OpenCart

Description

SPF, DKIM and DMARC are three DNS records that together authenticate the email sender. Without them emails from your store (order confirmations, password recovery) are very likely to end up in the Spam folder or be outright rejected by mail servers.

We configure SPF, DKIM and DMARC for the OpenCart store domain: correct DNS records, signature verification, delivery testing. Result — emails land in the inbox on Gmail, Outlook, Yahoo and other services.

What We Configure

• SPF: DNS TXT record authorising email sending on behalf of domain from specific IPs/services
• DKIM: cryptographic email signature via RSA key; configuration on mail server or SMTP service
• DMARC: policy for emails that fail SPF/DKIM verification; reports to email
• Verification via mail-tester.com (target — 10/10)
• Test send to Gmail, Outlook and ProtonMail

Spoofing Protection

DMARC with reject policy protects your domain from attackers using it to send phishing emails in your name. We configure gradually: first none (monitoring), then quarantine, then reject — to avoid blocking legitimate emails.