Adding the _universal PTR record for _sub subdomain

  1. From the Windows Administrative Tools window, click DNS.
  2. Expand the host name of your server, and then expand the _tcp and _ipps subdomains following the forward lookup zone.
  3. Right‑click the _sub subdomain, and then click Other New Records.
  4. In the Resource Record Type dialog box, select Pointer (PTR), and then click Create Record.
  5. In the Host IP Address field, type _universal.
  6. In the Host name field, type the host name in the following format:

    hostname._ipps._tcp.domain.com

    Where:

    • hostname is the host name of the server used when creating the host A record.

      Note: Use the correct server host name in the PTR record for the _sub domain and the PTR, SRV, and TXT records for the _ipps domain.

    • domain is the domain name of your organization.

  7. Click OK.