Guide to disable IMAP Throttling for a user (Exchange 2010)

To disable throttling limits for migration account MigAccount, please do the following:

  1. Open Exchange Management Shell (EMS) on exchange server or connect via PowerShell

  2. Enter the following command:
    New-ThrottlingPolicy MigrationPolicy

  3. Enter the following command:
    Set-ThrottlingPolicy MigrationPolicy -IMAPMaxConcurrency $null -IMAPPercentTimeInAD $null -IMAPPercentTimeInCAS $null -IMAPPercentTimeInMailboxRPC $null -RCAMaxConcurrency $null -RCAPercentTimeInAD $null -RCAPercentTimeInCAS $null -RCAPercentTimeInMailboxRPC $null -CPAMaxConcurrency $null -CPAPercentTimeInCAS $null -CPAPercentTimeInMailboxRPC $null -CPUStartPercent $null

  4. Enter the following command:
    Set-Mailbox "MigAccount" -ThrottlingPolicy MigrationPolicy



Exchange 2013 uses other parameters. Please refer to our Guide for Exchange 2013