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ESP AUTHENTICATION GUIDESPF Lookups: 1 / 10DKIM Type: TXTBIMI: Supported

How to Set Up SPF & DKIM for Postmark by ActiveCampaign: DNS Authentication Guide

Configure authoritative DNS records for Postmark by ActiveCampaign. Prevent spoofing, maintain high inbox placement at Google & Yahoo, and verify alignment without exceeding RFC 7208 lookup limits.

Required DNS Records for Postmark by ActiveCampaign

1. Sender Policy Framework (SPF)
Type: TXT
Host / Name:@
Value / Content:
v=spf1 include:spf.mtasv.net ~all
Uses 1 of your domain's 10 allowed DNS lookups under RFC 7208. Do not add duplicate SPF TXT records.
2. DomainKeys Identified Mail (DKIM)
Type: TXT
Selector / Host Name:pm._domainkey
Target / Key Content:
pm.domainkey.yourcompany.com
Delegates cryptographic signing to Postmark by ActiveCampaign. Alignment mode is set to strict.

Recommended DMARC Policy for Postmark by ActiveCampaign

Once both SPF and DKIM are verified on your domain, enforce DMARC to prevent attackers from sending unauthorized emails spoofing your brand:

v=DMARC1; p=reject; rua=mailto:dmarc-reports@yourcompany.com; pct=100; aspf=s; adkim=s

Vendor Resources & RFC Standards

RFC 7208 (SPF)RFC 6376 (DKIM)RFC 7489 (DMARC)Postmark by ActiveCampaign Official Setup Guide
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Verify Your Postmark by ActiveCampaign SPF & DKIM Records in Real-Time

Test your authoritative domain now to check DNS lookup limits, evaluate DMARC alignment, and ensure 100% deliverability to Google and Microsoft inboxes.

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