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Mailchimp SPF & DMARC Setup Guide

Mailchimp is the world’s most widely used email marketing platform. In 2026, Mailchimp requires custom domain authentication so that all campaigns send with aligned DKIM and DMARC compliance.

View Official Mailchimp Documentation
Email Marketing PlatformRFC 7208 & RFC 7489 Validated

Mailchimp DNS Preset Generator

Enter your domain below to customize the exact SPF and DMARC TXT records required for Mailchimp.

RFC 7208 DNS Lookup Cost1 of 10 Lookups

1 direct Mailchimp server pool query. Mailchimp uses CNAME records for DKIM, which handles authentication on Mailchimp servers while include:servers.mcsv.net validates SPF.

Lookup Budget1/10
RECORD 1: SPFHost: @ (or apex domain)Type: TXT
v=spf1 include:servers.mcsv.net ~all

⚠️ Important: If your domain already publishes an existing SPF record, merge include:servers.mcsv.net into that record. Never publish two separate SPF records.

RECORD 2: DMARCHost: _dmarc (or _dmarc.example.com)Type: TXT
v=DMARC1; p=quarantine; rua=mailto:dmarc-reports@example.com; pct=100; adkim=r; aspf=r

This policy enforces p=quarantine (suspicious emails routed to spam) and directs daily XML compliance reports to dmarc-reports@example.com.

Live DNS Propagation Check for example.com

Query Cloudflare DNS-over-HTTPS in real-time to check if your domain already publishes valid records.

Using Mailchimp alongside other platforms?Open Multi-Provider SPF Merger & Lookup Calculator
Step-by-Step Instructions

How to configure Mailchimp in your DNS

Follow these 4 straightforward steps to publish your authentication records on Cloudflare, GoDaddy, Namecheap, or AWS Route 53.

1

Add Domain in Mailchimp

In Mailchimp, click Account & billing > Settings > Domains, and click Add & Verify Domain.

2

Add Mailchimp SPF Include

Add include:servers.mcsv.net to your root SPF TXT record.

v=spf1 include:servers.mcsv.net ~all
3

Add Dual DKIM CNAME Records

Publish the two CNAME records (k2._domainkey and k3._domainkey) generated by Mailchimp.

4

Publish DMARC Policy

Ensure your root domain publishes a DMARC record to enable bulk delivery into Gmail and Yahoo.

v=DMARC1; p=quarantine; rua=mailto:dmarc-reports@yourdomain.com; pct=100
Technical Q&A

Frequently Asked Questions for Mailchimp

Technical answers regarding lookup limits, multiple records, and delivery errors.

What is Mailchimp’s official SPF string?▼
The official string is include:servers.mcsv.net. Never include individual Mailchimp IP addresses manually.
Can I send from @gmail.com or @yahoo.com in Mailchimp?▼
No. Gmail and Yahoo enforce DMARC p=reject for free consumer webmail addresses. You must send from your own authenticated custom domain.

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Our full in-browser engine merges SPF records, calculates RFC 7208 lookups in real-time, and generates custom DMARC policies.

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