CmdID

CmdID / PowerShell / Cmdlets / Remove

Remove-BlockedConnector

Use the Remove-BlockedConnector cmdlet to unblock inbound connectors that have been detected as potentially compromised. Exchange PowerShell reference

From the Exchange PowerShell reference 2 parameters Its page in the reference

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Parameters

2 in the Exchange PowerShell reference
-ConnectorIdThe ConnectorId parameter specifies the blocked connector that you want to unblock.
-ReasonThe Reason parameter specifies comments about why you're unblocking the blocked connector.