I noticed in our autodiscover service there was a left over of an old forest who we use to have a forest trust with for a setup involving linked mailboxes where the accounts existed in one forest and the mailboxes in ours. I'm trying to figure out how to delete reference to the old forest. I'm pretty sure I need to run autodiscoverconfig with the -deleteconfig option I'm just not sure the exact sysntax. Any help or suggestions would be very much appreciated. We no longer have any visibility or access to the remote forest. Below is the reference I'm trying to follow.
Could I just delete reference in ADSI edit below Microsoft Exchange Autodiscover for the container for the remote forest?