Remove-BlockedSenderAddress
This cmdlet is available only in the cloud-based service.
Use the Remove-BlockedSenderAddress cmdlet to unblock users in your Microsoft 365 organization that were affected by the protection system. These users sent multiple messages that were classified as spam, so they were blocked from sending messages.
Note: There's a limit to the number of times you can unblock a Microsoft 365 account. If you exceed the unblock limit for a user, you get an error, and you need to contact Microsoft Support to unblock the user.
For information about the parameter sets in the Syntax section below, see Exchange cmdlet syntax.
Syntax
Default (Default)
Remove-BlockedSenderAddress
-SenderAddress <SmtpAddress>
[-Reason <String>]
[<CommonParameters>]
Description
You need to be assigned permissions before you can run this cmdlet. Although this article lists all parameters for the cmdlet, you might not have access to some parameters if they aren't included in the permissions assigned to you. To find the permissions required to run any cmdlet or parameter in your organization, see Find the permissions required to run any Exchange cmdlet.
Examples
Example 1
Remove-BlockedSenderAddress -SenderAddress julia@contoso.com
This example unblocks the user julia@contoso.com.
Parameters
-Reason
Applicable: Exchange Online, Exchange Online Protection
The Reason parameter specifies the reason the user was blocked (the Reason property value). If the value contains spaces, enclose the value in quotation marks (").
Parameter properties
| Type: | String |
| Default value: | None |
| Supports wildcards: | False |
| DontShow: | False |
Parameter sets
(All)
| Position: | Named |
| Mandatory: | False |
| Value from pipeline: | False |
| Value from pipeline by property name: | False |
| Value from remaining arguments: | False |
-SenderAddress
Applicable: Exchange Online, Exchange Online Protection
The SenderAddress parameter specifies the email address of the user that you want to unblock.
Parameter properties
| Type: | SmtpAddress |
| Default value: | None |
| Supports wildcards: | False |
| DontShow: | False |
Parameter sets
(All)
| Position: | Named |
| Mandatory: | True |
| Value from pipeline: | False |
| Value from pipeline by property name: | False |
| Value from remaining arguments: | False |
CommonParameters
This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutBuffer, -OutVariable, -PipelineVariable, -ProgressAction, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.