Authenticate your domain with ViralSweep to send emails as a verified sender.
This helps:
Improve email deliverability
Reduce the chance of emails going to spam
Prevent email bounces
Before you begin
You must own the domain you want to authenticate.
❌ Email providers like Gmail, Yahoo, or Hotmail cannot be used
✅ Use an email address from your own domain (e.g., [email protected])
How to authenticate your domain
This feature is set up per campaign, so you can authenticate different domains for different promotions.
Step 1: Go to Sender Authentication
Navigate to:
Edit → Advanced → Sender Authentication
Step 2: Enter your sending email
Input the email address you want to send from, then click Authenticate Domain.
Step 3: Add DNS records
You’ll be given several DNS records (usually CNAME records).
Log in to your DNS provider (e.g., GoDaddy, Amazon Route 53, Namecheap)
Add the records exactly as provided
Step 4: Verify your domain
After adding the records, return to ViralSweep and click Verify Domain.
DNS changes can take some time to propagate, so verification may not be instant.
Common DNS setup issue (Important)
Some DNS providers automatically append your root domain to the Host/Name field.
This can cause duplicate entries and lead to failed verification.
Example
If ViralSweep provides:
em123.yourdomain.com
You should enter:
Host/Name:
em123(not the full domain)
Correct CNAME formatting
Provided Host/Name | What to enter in DNS |
em123.yourdomain.com | em123 |
s1._domainkey.yourdomain.com | s1._domainkey |
s2._domainkey.yourdomain.com | s2._domainkey |
Note:
You do not need to modify the Value / Points To field.
Troubleshooting
Domain won’t verify
Double-check that all DNS records were entered correctly
Make sure your DNS provider isn’t reformatting the Host/Name field
Review the example above for common formatting issues
Wait a bit—DNS changes can take time to update
Need to access your DNS records again?
DNS records are typically only shown during the initial setup.
If you need them again, you may need to:
Reset the authentication
Reconfigure the domain
Need help?
If you have questions or run into issues:
Click the chat icon in the bottom-right corner to talk with our support team