My installation has different regions each of them with different DNS domains and I have to install PAM servers on those sites. Is this environment supported? Can a multisite PAM cluster have nodes in different DNS domains depending on the site location?
The PAM appliances of an installation may belong to different DNS domains and this should not be a problem, as far as the DNS servers be correctly configured to allow direct (name to IP) and reversed (IP to name) resolution to all of them and to the devices they should access.
Please visit the following technical article to configure the PAM Server appliances to be able to resolve devices names in all the DNS available to the installation: