1. Add the address
After an authorized DMTG Tech administrator adds the custom address, the portal displays a unique TXT record and the shared CNAME target. The ownership value belongs only to that address and tenant.
2. Prove domain ownership
- Create the TXT record at the exact verification name shown beside the domain.
- Paste the verification value without adding quotation marks.
- Leave the TXT record in place while the domain is connected.
- Select Check now after the authoritative DNS provider publishes the record.
3. Connect the portal
- Create a DNS-only CNAME from the custom portal host to the exact target shown in the Control Panel.
- Disable proxying or CNAME flattening until setup completes.
- Wait for the ownership and CNAME checks to pass. The portal requests a certificate only after both are ready.
- Open the HTTPS address and confirm that it displays the intended tenant before sharing it with staff.
Why two DNS records are required
The TXT record proves control of the DNS zone; the CNAME directs traffic. Keeping those checks separate prevents an address that merely points at the service from being silently assigned to another tenant and avoids unnecessary certificate requests while DNS is incomplete.