We have exchange 2016 on premise, where you are migrating from domino using binary tree, but we get the throttling issue that no more than 20 migrations can be started using the same admin account.
We have already tried the below throttling policy as mentioned in the link but still we face the same issue. When we try to do more than 20 at a time, it gives the autodiscover failure error.
Can anyone please help how to get rid of the throttling!!
Open the Exchange Management Shell.
Type the following command and press Enter: New-ThrottlingPolicy MigrationPolicy
Type the following command and press Enter: Set-ThrottlingPolicy MigrationPolicy -RCAMaxConcurrency Unlimited -EWSMaxConcurrency Unlimited -EWSMaxSubscriptions Unlimited -CPAMaxConcurrency Unlimited -EwsCutoffBalance Unlimited -EwsMaxBurst Unlimited -EwsRechargeRate Unlimited
Type the following command and press Enter: Set-Mailbox "MigrationAdmin" -ThrottlingPolicy MigrationPolicy
Premise is an idea. On-Premises or On-Prem (for short) is the correct wording.
Set the throttling settings to below values and check the difference,
EwsCutoffBalance = Unlimited
EwsMaxSubscriptions = 20
EwsMaxBurst = Unlimited
EwsMaxConcurrency = 27
EwsRechargeRate = Unlimited
Exchange Admin - Apps4Rent