DNS: The Single Source of Truth 10

• Why it's safe to point SPF/DKIM/DMARC to Valimail
• Valimail DNS Downtime
• My DNS provider doesn't allow creation of NS records. What workarounds are possible?
• Legal Characters in DNS
• Why do some DNS providers not allow Valimail’s NS delegation for DMARC and DKIM?

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DMARC: The Gatekeeper 8

• What is DMARC?
• DMARC Alignment
• DMARC Aggregate Reports
• DKIM and SPF alignment: what it is, why it matters and how to fix it
• When to switch Enforcement policies

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SPF: Who Sent It? 6

• What is SPF?
• Valimail SPF Records
• SPF Flattening
• Working around Vendor Verification of SPF
• Trailing SPF Includes in Valimail Delegated Domains

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DKIM: Who Signed It? 4

• What is DKIM?
• How does DKIM work?
• What characters are permitted in a DKIM selector?
• Rotating DKIM keys

ARC: Who Forwarded It? 1

• What is ARC?

Specific DNS Providers 11

• Infoblox DNS
• I Use AT&T For DNS And Can't Add The Enforce Records In Their UI
• Windows Server DNS Configuration
• One-time DNS Configuration for Cloudflare
• DNS Configuration DNS Made Easy

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