5 DNS Mistakes That Kill Your Cold Email Campaigns

Sending cold emails isn't enough. To land in the inbox, your infrastructure needs to be authenticated. That's where proper DNS configuration makes or breaks your campaigns.

DNS works behind the scenes before you ever hit send. It tells email providers who you are, verifies your domain, and proves you're not a spammer. Without it, your emails go straight to junk. No matter how good your copy is.

With SPF, DKIM, and DMARC working together, you no longer have to guess why emails aren't landing. DeliverOn configures every protocol correctly from day one so you can focus on outreach while staying authenticated.

Here are the 5 DNS mistakes killing your deliverability:

1. Missing SPF records. Email providers can't verify your sending server. Instant spam flag.

2. Broken DKIM signatures. Your emails look tampered with. Trust destroyed.

3. No DMARC policy. You're telling providers you don't care about authentication. They respond accordingly.

4. Using shared tracking domains. One bad sender ruins the domain for everyone. Your clicks stop registering.

5. Skipping warmup after DNS changes. New authentication needs new reputation. Cold starts get cold results.

Founders, agencies, and sales teams use DeliverOn to skip these mistakes entirely. It's like having a DevOps team configuring every record. Without the DevOps team.