CmdID

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Remove-IPBlockListEntry

Use the Remove-IPBlockListEntry cmdlet to remove IP block list entries that are used by the Connection Filtering agent on Edge Transport servers. Exchange PowerShell reference

From the Exchange PowerShell reference 4 parameters Its page in the reference

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Parameters

4 in the Exchange PowerShell reference
-IdentityThe Identity parameter specifies the integer value of the IP Block list entry that you want to remove.
-Confirm, -cfThe Confirm switch specifies whether to show or hide the confirmation prompt.
-ServerThe Server parameter specifies the Exchange server where you want to run this command.
-WhatIf, -wiThe WhatIf switch shows what the command does without making any changes.