For multiple domains, check if this AD global dialog is available:
https://blog.stealthbits.com/what-is-a-global-catalog-server/

The global dialog is usually listen on port 3268, please check if this port is open on the server: “telnet serverAddress 3268”

Configure SparkView by using this port and the domain server:

{
“source”:{
“type”: “AD”,
“properties”: {
“server”: “172.20.6.5:3268”
}
}
}