How to add/remove allow sender of distribution group with powershell?

Question

Hello,Please help me about how to add/remove allow sender of distribution group using Powershell?I did find a few answers like the one below:&nbsp;set the allow list users addresses:

Set-DistributionGroup "group name" –AcceptMessagesOnlyFrom email address removed for privacy reasons,email address removed for privacy reasons

add the specific users to allow list:

Set-DistributionGroup "group name" –AcceptMessagesOnlyFrom @{add="email address removed for privacy reasons","email address removed for privacy reasons"}

remove the specific users to allow list:

Set-DistributionGroup "group name" –AcceptMessagesOnlyFrom @{remove="email address removed for privacy reasons","email address removed for privacy reasons"}

use the following command to check the allow list users:

Get-distributiongroup -identity "group name" | fl acceptmessagesonlyfrom

Reminder: we need to type "" in the command in powershell. &nbsp;&nbsp;However, when I run the command, I get this error:&nbsp;PS C:\WINDOWS\system32&gt; Set-DistributionGroup "All Security Insurance" AcceptMessagesOnlyFrom @{add="email address removed for privacy reasons"}
Set-DistributionGroup : A positional parameter cannot be found that accepts argument 'AcceptMessagesOnlyFrom'.
At line:1 char:1
+ Set-DistributionGroup "All Security Insurance" AcceptMessagesOnlyFrom @{a ...
+ CategoryInfo : InvalidArgument: (:) [Set-DistributionGroup], ParameterBindingException
+ FullyQualifiedErrorId : PositionalParameterNotFound,Set-DistributionGroup&nbsp;&nbsp;I did connect to the exchange using:&nbsp; Connect-ExchangeOnline(Import-Module ExchangeOnlineManagement)Btw, I use the standard Office 365 portal - it is not on-premises Office.I would be grateful for your help, please.Thank youSebastian

eliekarkafy · Answer

sebgal&nbsp;to add a user as a sender to a DL , try the below&nbsp;&nbsp;# Connect to Exchange Online$UserCredential = Get-CredentialConnect-ExchangeOnline -UserPrincipalName $UserCredential.UserName# Replace "DistributionGroupName" with the actual name of your distribution group$GroupName = "DistributionGroupName"$NewSender = "email address removed for privacy reasons"# Add the new sender to the distribution groupAdd-DistributionGroupMember -Identity $GroupName -Member $NewSender# Disconnect from Exchange OnlineDisconnect-ExchangeOnline -Confirm:$false&nbsp;&nbsp;&nbsp;To remove as sender from DL, try the below&nbsp;&nbsp;# Connect to Exchange Online$UserCredential = Get-CredentialConnect-ExchangeOnline -UserPrincipalName $UserCredential.UserName# Replace "DistributionGroupName" with the actual name of your distribution group$GroupName = "DistributionGroupName"$SenderToRemove = "email address removed for privacy reasons"# Remove the sender from the distribution groupRemove-DistributionGroupMember -Identity $GroupName -Member $SenderToRemove -Confirm:$false# Disconnect from Exchange OnlineDisconnect-ExchangeOnline -Confirm:$false

sebgal · Answer

eliekarkafyMany thanks for getting back to me.

Your script functions excellently if I intend to add or remove a user to or from the Distribution List.

I've given it a go, and it's certainly proven to be very helpful - saved for future reference. 🙂

However, it's of particular importance for me to add a user (who is already a member of this Distribution List) to the group of senders permitted to email this distribution group email. Kindly refer to the screenshot below. I attempted to achieve this through the Office 365 Exchange portal, but I encountered an error: "Argument passed in is not serializable. Parameter name: value."

That's the reason I'm attempting to use PowerShell to accomplish this task instead.

eliekarkafy · Answer

sebgal&nbsp;you can do that using powershell&nbsp;&nbsp;$UserCredential = Get-CredentialConnect-ExchangeOnline -UserPrincipalName &lt;YourAdminEmail&gt; -ShowProgress $true -UserCredential $UserCredentialAdd-DistributionGroupMember -Identity "DistributionListName" -Member "email address removed for privacy reasons", "email address removed for privacy reasons"Disconnect-ExchangeOnline -Confirm:$false

sebgal · Answer

Thank you, however when I run this script, I get this error:cmdlet Get-Credential at command pipeline position 1Supply values for the following parameters:CredentialConnect-ExchangeOnline : A parameter cannot be found that matches parameter name 'UserCredential'.At C:\Users\sebga\Documents\3.ps1:2 char:89+ ... email address removed for privacy reasons -ShowProgress $true -UserCredential $UserCr ...+ ~~~~~~~~~~~~~~~+ CategoryInfo : InvalidArgument: (:) [Connect-ExchangeOnline], ParameterBindingException+ FullyQualifiedErrorId : NamedParameterNotFound,Connect-ExchangeOnlineAdd-DistributionGroupMember : The term 'Add-DistributionGroupMember' is not recognized as the name of a cmdlet,function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that thepath is correct and try again.At C:\Users\sebga\Documents\3.ps1:3 char:1+ Add-DistributionGroupMember -Identity "All Movo Insurance" -Member "l ...+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~+ CategoryInfo : ObjectNotFound: (Add-DistributionGroupMember:String) [], CommandNotFoundException+ FullyQualifiedErrorId : CommandNotFoundException

sebgal · Answer

This is the script I used:$UserCredential = Get-CredentialConnect-ExchangeOnline -UserPrincipalName email address removed for privacy reasons -ShowProgress $true -UserCredential $UserCredentialAdd-DistributionGroupMember -Identity "All Movo Insurance" -Member "email address removed for privacy reasons"Disconnect-ExchangeOnline -Confirm:$false

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How to add/remove allow sender of distribution group with powershell?

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