Cloudflare DMARC Setup
Domain-based Message Authentication - Step-by-step configuration guide
Prerequisites
- • 已配置好 SPF 和 DKIM
- • 已准备好接收报告的邮箱
Configuration Steps
1
进入 DNS 管理
Cloudflare → 选择域名 → DNS → Records
2
添加 DMARC 记录
Add record → Type: TXT → Name: _dmarc → Content: DMARC 策略值
3
选择策略级别
建议渐进式部署：先用 p=none 监控 → 确认无误后改为 p=quarantine → 最终升级为 p=reject
rua 是接收聚合报告的邮箱，建议配置以监控邮件认证情况
4
保存
保存记录，DMARC 通常几分钟内生效
Example Configuration
Example DMARC Value
v=DMARC1; p=quarantine; rua=mailto:dmarc-reports@yourdomain.com; pct=100⚠️ This is an example value. Modify it according to your email service provider's requirements.
Verify Your Configuration
Terminal Command
$ dig TXT _dmarc.yourdomain.com +shortReplace "yourdomain.com" with your actual domain name
Common Mistakes to Avoid
- ✗Name 写成 _dmarc.yourdomain.com（应该只写 _dmarc）
- ✗一开始就用 p=reject 导致正常邮件被拒绝
- ✗没有配置 rua 邮箱，无法收到报告
Other Cloudflare Guides
DMARC Guides for Other Providers
Verify Your DMARC Configuration
After setting up your DMARC record, use our free checker to verify it's correctly configured.
Check Your Domain Now