How to configure ActiveCampaign in your DNS
Follow these 4 straightforward steps to publish your authentication records on Cloudflare, GoDaddy, Namecheap, or AWS Route 53.
Access Advanced Email Settings
In ActiveCampaign Settings > Advanced, click on the Domain Authentication section.
Add Custom Mail Server Domain
Set up a CNAME for ac-mail.yourdomain.com pointing to emsd1.com for complete SPF Return-Path alignment.
Add SPF Include to Root Domain
Add include:emsd1.com into your root SPF record.
v=spf1 include:emsd1.com ~allPublish ActiveCampaign DMARC Policy
Add your DMARC record to protect your marketing automation sequences.
v=DMARC1; p=quarantine; rua=mailto:dmarc-reports@yourdomain.com; pct=100Frequently Asked Questions for ActiveCampaign
Technical answers regarding lookup limits, multiple records, and delivery errors.
What is ActiveCampaign’s SPF include address?▼
Does ActiveCampaign require a dedicated IP for DMARC?▼
Common Providers Used with ActiveCampaign
Send marketing and transactional emails alongside your corporate inbox.
HubSpot
Inbound Marketing, Sales Automation & CRM Platform
Klaviyo
E-commerce Marketing Automation & Customer Intelligence
Brevo (formerly Sendinblue)
All-in-One CRM, Marketing Campaigns & Transactional SMS/Email
Google Workspace (Gmail)
Official Business Gmail & Google Cloud Email
Need to combine multiple providers into one SPF record?
Our full in-browser engine merges SPF records, calculates RFC 7208 lookups in real-time, and generates custom DMARC policies.