Who This Is For / When to Use
Use this article if you:
Send campaigns, workflows, or one-to-one emails from Kyrios
Want to remove “sent via msgsndr.net” from email headers
Need to meet Google and Yahoo 2024 sender requirements
Want better inbox placement and domain-level sending reputation
What Is a Dedicated Sending Domain
A dedicated sending domain allows emails sent from Kyrios to appear as if they are sent directly from your brand’s domain instead of Kyrios default sending domains.
Without a dedicated sending domain, recipients may see:
“via mg.kyriossystems.com”
“mailed-by: mg.kyriossystems.com”
“signed-by: mg.kyriossystems.com”
Where to Access Dedicated Domains
Go to Settings
Open Email Services
Select SMTP Service
Click Dedicated Domain and IP
Step 1: Add a New Dedicated Domain
Click Add Domain
Enter your domain or subdomain in lowercase
Click Add & Verify
Recommended:
Use a subdomain, not your root domain
Example:
communication.yourdomain.com
Step 2: Connect Domain or Subdomain
After entering the domain, confirm it in the connection modal.
Review the domain URL
Click Continue
Choose auto-configure DNS or manual setup
Step 3: Add DNS Records (Manual Verification)
If auto-configuration is unavailable, add the DNS records manually with your DNS provider.
Kyrios will provide:
TXT (DKIM)
TXT (SPF)
CNAME
MX (2 records)
Optional TXT (DMARC)
DNS Propagation Notes
DNS changes can take up to 24 hours
Status will show Not Verified until propagation completes
Step 4: Add a DMARC Record (Required for Google & Yahoo)
Add a TXT record with the following format:
v=DMARC1; p=none; rua=mailto:[email protected]
Replace the email address with the inbox where you want DMARC reports sent.
GoDaddy-Specific Note
If using a subdomain:
Record name format:
_dmarc.subdomainprefix
Example:
Sending domain:
reply.yourdomain.comDMARC name:
_dmarc.reply
Step 5: Verify the Domain
Return to Kyrios
Click Verify Domain
Wait until all required records show Verified
SSL is issued automatically after verification
Step 6: Set the Domain as Active / Default
Select the domain checkbox
Ensure status shows Active
The active domain becomes available for sending
Step 7: Configure Domain Usage by Email Type
Open the Domain Configuration tab
Assign domains to:
Workflow emails
One-to-one conversations
Campaign emails
Bulk emails
Set a Default Dedicated Domain
Step 8: Set Default Email Headers (From Name & Email)
You can define a default sender for the domain.
Click the three-dot menu on the domain
Select Set Headers
Enter:
From Name
From Email
Save changes
How to Delete a Dedicated Domain
Open Email Services → SMTP Service
Locate the domain
Click the three-dot menu
Select Delete Domain
Common Issues and Fixes
Domain Already Pointing to Email Server
Cause: Existing MX or SPF records from another provider
Fix: Remove all existing MX and SPF records before adding the domain
Records Not Verifying
Cause: DNS propagation delay or incorrect values
Fix:
Recheck hostnames and values
Wait up to 24 hours
Verify records with a DNS lookup tool
SSL Not Issued
Cause: Partial verification
Fix: Re-run domain verification after all required records are verified
Important Sending Rules (2024+)
Use a professional email provider (Google Workspace, Microsoft 365)
Do not use free inboxes (Gmail, Yahoo, Outlook) for bulk sending
Avoid generic subdomains like:
mail.mg.email.
Always include DMARC
Warm up new domains gradually
Avoid cold or unengaged email lists
FAQ
What domain should I use for sending?
Use a unique subdomain that is not used for websites or apps, such as communication.yourdomain.com.
Will unsubscribe links be added automatically?
Yes. Kyrios automatically includes an unsubscribe header in all applicable emails.
Can I use one domain for all email types?
Yes, but you can also assign different domains per email type using Domain Configuration.
What happens if DNS records are not verified?
Emails will not send from the dedicated domain until verification is complete.
Does Kyrios support existing Mailgun domains?
No. Domains already registered with Mailgun cannot be added to avoid conflicts.