Changing DNS name on a Sametime 6.5.x server

I have recently changed the DNS name of a Sametime server, this is what is necessary to get it working.

hosts

This file usually exists in c:winntsystem32driversetc or c:windowssystem32driversetc. Make sure it is updated with the new DNS name of the server. The entries should look something like this:

127.0.0.1 localhost 192.168.0.1 my.new.dns.com

192.168.0.1 should be replaced with the IP address of your Sametime server, and my.new.dns.com should be replaces with the new DNS name of the Sametime server.

sametime.ini

Usually found in c:LotusDomino. Make sure that the ConfigurationHost and STLINKS_HOST (if it exists) are set to the new DNS name. Here is an example extract:

[Config] ConfigurationHost=my.new.dns.com [Connectivity] STLINKS_HOST=my.new.dns.com

Server document

There are four fields (actually five, but the fifth is set automatically) that has to be changed:

  • Basics tab, ”Fully qualified host name”
  • Ports tab, Notes Network Ports tab, all ”Net Address” fields
  • Internet Protocols tab, HTTP tab, ”Host name(s)” field
  • Internet Protocols tab, Domino Web Engine tab, ”Host name” field

Web SSO Configuration

Sametime automatically creates a ”Web SSO Configuration for LtpaToken” document on installation. This has to be recreated:

  • Remove the old LtpaToken document
  • Open the server document
  • Press the ”Create Web (R5)…” button and select ”SSO Configuration”
  • Press the ”Keys…” button and select ”Create Domino SSO Key”
  • Enter the correct domain name (without the first host name) in ”DNS Domain”. If your host name is my.new.dns.com, only enter new.dns.com here.
  • Alter the Token Expiration section to your needs
  • Save the document

Finish the change

Restart the Domino server, and it should work. If you forget to change the LtpaToken document, you will not be able to login…