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Adding a New Domain to an Existing Virtru Hosted Gateway Customer

  • Updated

Overview

Organizations using the Virtru Hosted Gateway may occasionally need to send encrypted email from additional domains beyond the one originally configured during deployment. This commonly happens when:

  • A company acquires or begins using a new email domain(s)
  • The organization was not fully synced during the original setup
  • A new domain was added after the initial Virtru sync

In these cases, the new domain or domains must be associated with the organization’s Virtru account before it can route messages through the Hosted Gateway.

Important Note: 

As part of the process, the domain must already exist in the customer's existing email tenant.

This validation ensures:

  • Proper domain ownership
  • Secure routing of encrypted messages
  • Correct mapping within the Virtru Hosted Gateway infrastructure

Why Domain Association is Required

The Virtru Hosted Gateway uses an internal customer table mapping that associates domains with an organization’s Virtru account.

If a domain is not associated with your organization:

  • The gateway cannot process or encrypt messages from that domain
  • Routing rules may fail or encryption may not trigger as expected

For this reason, new domains must be registered and verified in the Virtru backend before they can be used.

Step 1: Complete DNS Prerequisites

Before submitting a request, ensure the DNS records for the new domain(s) are properly configured.

You must complete the prerequisites for any domain or domains intended to send messages through the Virtru Hosted Gateway Setup.

Customers can use their existing TXT value for the new domain(s)

  • TXT Record
    Created so Virtru can verify domain ownership prior to implementation:
  • Name: @
  • Type: TXT
  • Value: virtru-site-verify=<use_the_existing_virtru_supplied_token>

Step 2: Submit a Domain Request to Virtru Support

Once DNS prerequisites are complete, contact Virtru Support to associate the new domain(s) with your organization.

Subject: New Domain Request

Body: 
Primary Org Domain: currentdomain.com
Org Name: Acme Inc
Org Owner / Virtru Super Administrator: admin@currentdomain.com
New Domain(s) to add: newdomain.com
Acceptance Criteria:
Please add newdomain.com to my Customer Table for currentdomain.com to use the Virtru Hosted GW

Step 3: Virtru Validation and Backend Configuration

After the request is received, the Virtru team will:

  1. Verify your organization details
  2. Confirm the requesting user is a Virtru Super Administrator
  3. Validate the DNS records and domain ownership
  4. Associate the new domain with your organization's customer record

If additional information is required, Virtru Support will reach out for clarification.

Once the domain has been successfully associated with your organization:

  • Your existing Hosted Gateway routing rules can be used
  • Mail flow rules in Microsoft 365 or Google Workspace can begin sending traffic from the new domain
  • Encryption policies and rules will apply normally

No additional gateway installation or infrastructure changes are required.

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