Getting SPF DKIM and DMARC right is the first thing to fix before any email outreach campaign, because without them most of your emails will land in spam. If your cold email response rates dropped overnight, you’re not alone. Inbox providers like Google and Yahoo have tightened their authentication enforcement. Today, sending outreach emails without a flawless DNS setup isn’t just risky—it guarantees your messages land straight in the SPAM folder.
Fixing your deliverability doesn’t require a full IT team, but it does require setting up your authentication protocols correctly. Here is how to fix your SPF, DKIM, and DMARC setup to protect your domain reputation.
1. Fix Your SPF Record (Avoid the Multiple Record Trap)
Sender Policy Framework (SPF) tells receiving servers which IP addresses are authorized to send emails on behalf of your domain.
The most common mistake: Having multiple SPF records. If your DNS contains two different v=spf1 TXT records, inbox providers consider your configuration invalid and fail the check automatically.
- Incorrect:
- Record 1:
v=spf1 include:_spf.google.com ~all - Record 2:
v=spf1 include:sendgrid.net ~all
- Record 1:
- Correct (Merged):
v=spf1 include:_spf.google.com include:sendgrid.net ~all
Ensure you have exactly one SPF TXT record on your domain.
2. Configure DKIM Keys for Every Sending Platform
DomainKeys Identified Mail (DKIM) attaches a cryptographic signature to every email you send. It proves that the email was actually sent by you and wasn’t altered in transit.
If you send cold outreach through Google Workspace, Microsoft 365, or specialized sequencing tools, every single tool needs its own DKIM CNAME or TXT record added to your DNS.
- Generate the DKIM key inside your email provider’s admin console.
- Add the selector record to your DNS settings.
- Click Start Authentication inside your email platform to verify.
3. Upgrade Your DMARC Policy Safely
DMARC (Domain-based Message Authentication, Reporting, and Conformance) tells receiving inbox providers what to do if an email fails SPF or DKIM checks.
Most domains start with a neutral policy: v=DMARC1; p=none; rua=mailto:dmarc-reports@yourdomain.com
While p=none is fine for testing, modern spam filters favor domains actively enforcing security. To maximize deliverability, your goal should be transitioning toward p=quarantine or p=reject once your authentication alignment is fully verified.
The Zero-Access Alternative: Get It Fixed in 24 Hours
Debugging mail headers, fixing syntax errors, and managing DNS propagation can easily consume hours you should be spending on sales. Worse, sharing domain passwords with third parties creates serious security risks.
At SendAndChill, we fix your entire email authentication infrastructure via delegation—meaning zero passwords shared.
- DNS Record Configuration (MX, A, CNAME, TXT)
- Full SPF, DKIM, & DMARC Protocol Setup
- Basic Delivery & Mail Header Validation