Update DNS SRV records

  • Article

To successfully complete this procedure, you should be logged on to the server or domain as a member of the Domain Admins group or a member of the DnsAdmins group.

This topic describes how to update the Domain Name System (DNS) records after migrating to Skype for Business Server 2019. After all users have been moved to Skype for Business Server 2019, but before the legacy pool or Director is decommissioned, you must update the DNS SRV records in your internal DNS for every SIP domain. This procedure assumes that your internal DNS has zones for your SIP user domains.

To configure a DNS SRV record

  1. On the DNS server, click Start, click Administrative Tools, and then click DNS.

  2. In the console tree for your SIP domain, expand Forward Lookup Zones, expand the SIP domain in which Skype for Business Server 2019 is installed, and navigate to the _tcp setting.

  3. In the right pane, right-click _sipinternaltls and select Properties.

  4. In Host offering this service, update the host FQDN to point to the Skype for Business Server 2019 pool.

  5. Click OK.

To verify that the FQDN of the Front End pool or Standard Edition server can be resolved

  1. Log on to a client computer in the domain.

  2. Click Start, and then click Run.

  3. In the Open box, type cmd, and then click OK.

  4. At the command prompt, type nslookup <FQDN of the Front End pool> or <FQDN of the Standard Edition server>, and then press ENTER.

  5. Verify that you receive a reply that resolves to the appropriate IP address for the FQDN.