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How to add a new a alias to an existing Office 365 group

How to add a new a alias to an existing Office 365 group

How to add a new a alias to an existing Office 365 group

Tolles Script, sehr hilfreich! Ziel das umbennen einer O365 Gruppe!! Gefunden auf Microsoft

Scenario:

  • You want to add a new alias to an existing Office 365 Group.
  • You want external senders to be able to send emails to the new alias.

 

#——————————————————————————
#
# Copyright © 2017 Microsoft Corporation. All rights reserved.
#
# THIS CODE AND ANY ASSOCIATED INFORMATION ARE PROVIDED “AS IS” WITHOUT
# WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
# LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS
# FOR A PARTICULAR PURPOSE. THE ENTIRE RISK OF USE, INABILITY TO USE, OR
# RESULTS FROM THE USE OF THIS CODE REMAINS WITH THE USER.
#
#——————————————————————————
#
# PowerShell Source Code
#
# NAME:
# Office365_add_alias.ps1
#
# VERSION:
# 1.0
#
#——————————————————————————
[CmdletBinding()]
param
(
[Parameter(Mandatory = $True, Position = 0)]
[ValidateNotNullOrEmpty()]
[string]$CurrentGroupAddress,
[Parameter(Mandatory = $True, Position = 1)]
[ValidateNotNullOrEmpty()]
[string]$NewGroupAddress
)
#region Set Up Variables
$Matcheduser = $Null
$Matchedgroup = $Null
$MatchedOldGroup = $Null
$Objid = $Null
$CheckDomain = $Null
$AllUsers = $Null
$AllGroups = $Null
$MatchedUnifiedOldGroup = $Null
$MatchedRecipient = $Null
$MatchedMSODS = $Null
$MatchedEXO = $Null
$UserMatchFound = $false
$GroupMatchFound = $false
$MSODSEmailAddress = $Null
$CounterEXO = 6
$CounterMSODS = 6
$CheckEXO = $Null
$CheckMSODS = $Null
#endregion
#region Connect to Office 365
try
{
# Connect to Azure AD
Write-Host „Please enter your Office 365 credentials“ -ForeGroundColor Green
$O365Cred = Get-Credential
Import-Module MSOnline
Write-Host „`nConnecting to Azure AD…“
Connect-MsolService –Credential $O365Cred
# Connect to Exchange Online
Write-Host „`nConnecting to Exchange Online…“
$O365Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri „https://outlook.office365.com/powershell-liveid/“ -Credential $O365Cred -Authentication „Basic“ -AllowRedirection
Import-PSSession $O365Session -DisableNameChecking -AllowClobber | ft
}
catch
{
Write-Host „`nUnable to connect to Office 365`n“ -Foregroundcolor Red
Read-Host “Press ENTER to exit…”
Exit
}
#endregion
#region Checking if the old address exists
Write-Host „Checking the address $CurrentGroupAddress in Exchange Online“
$MatchedUnifiedOldGroup = Get-UnifiedGroup -Identity $CurrentGroupAddress -ErrorAction SilentlyContinue | select Name, EmailAddresses
if ($MatchedUnifiedOldGroup -eq $Null)
{
Write-Host „`tI was not able to find $CurrentGroupAddress in Exchange Online `n“-Foregroundcolor Red
Read-Host “Press ENTER to exit…”
Exit
}
else
{
Write-Host „`tDone. The address $CurrentGroupAddress was found in Exchange Online`n“ -Foregroundcolor Yellow
}
Write-Host „Checking the address $CurrentGroupAddress in Azure AD“
$MatchedOldGroup = Get-MsolGroup -All -SearchString $CurrentGroupAddress | select ObjectId,proxyAddresses
if ($MatchedOldGroup -eq $Null)
{
Write-Host „`tI was not able to find $CurrentGroupAddress. Are you sure this is the primary address of the group?`n“-Foregroundcolor Red
$Objid = (Get-UnifiedGroup $CurrentGroupAddress).ExternalDirectoryObjectId
$MSODSEmailAddress = Get-MsolGroup -ObjectId $objid |select EmailAddress
Write-Host „Based on Exchange Online info $($MSODSEmailAddress.EmailAddress) might be the primary address. Would you like me to use this address instead of $($CurrentGroupAddress)? (Default is No)“ -Foregroundcolor Yellow
$Readhost = Read-Host „Enter your choice ( y / n ) “
Write-Host „`n“
Switch ($ReadHost)
{
Y {$CurrentGroupAddress = $MSODSEmailAddress.EmailAddress}
N {Read-Host “Press ENTER to exit…”; Exit}
Default {Read-Host “Press ENTER to exit…”; Exit}
}
}
else
{
Write-Host „`tDone. The address $CurrentGroupAddress was found `n“ -Foregroundcolor Yellow
}
#endregion
#region Verify the new address
Write-Host „Checking if the address $NewGroupAddress is part of an accepted domain“
$CheckDomain = Get-AcceptedDomain -Identity ($NewGroupAddress.Split(„@“))[1] -ErrorAction SilentlyContinue
If ($CheckDomain -eq $Null)
{
Write-Host „`tDomain does not exists or is not correct`n“ -Foregroundcolor Red
Read-Host “Press ENTER to exit…”
Exit
}
else
{
Write-Host „`tDone. The domain was found `n“ -Foregroundcolor Yellow
}
#endregion
#region Checking if new address exists in MSODS
Write-Host „Checking if any user in Azure AD contains $NewGroupAddress (this may take a while)…“
$AllUsers = Get-MsolUser –All | Select userPrincipalName,proxyAddresses
$AllGroups = Get-MsolGroup –All | Select ObjectId,proxyAddresses
#loop all users
ForEach ($User in $AllUsers)
{
#loop proxyAddresses
ForEach ($UPA in $User.ProxyAddresses)
{
If ($UPA –Match $NewGroupAddress)
{
$UserMatchFound = $True
$Matcheduser = $User
}
}
}
write-host „`tDone. `n“ -Foregroundcolor Yellow
write-host „Checking if any group in Azure AD contains $NewGroupAddress (this may take a while)…“
#loop all groups
ForEach ($Group in $AllGroups)
{
#loop proxyAddresses
ForEach ($GPA in $Group.ProxyAddresses)
{
If ($GPA –Match $NewGroupAddress)
{
$GroupMatchFound = $True
$Matchedgroup = $Group
}
}
}
write-host „`tDone.`n“ -Foregroundcolor Yellow
If ($UserMatchFound -or $GroupMatchFound)
{
$MatchedMSODS = $true
If ($UserMatchFound)
{
Write-Host „`nThe new address exists in Azure AD“
Write-Host „The user $($Matcheduser.userPrincipalName) contains the following addresses: $($Matcheduser.ProxyAddresses)`n“ -Foregroundcolor Red
Read-Host “Press ENTER to exit…”
Exit
}
Else
{
Write-Host „`nThe new address exists in Azure AD“
Write-Host „`The group $($Matchedgroup.ObjectId) contains the following addresses: $($Matchedgroup.ProxyAddresses)`n“ -Foregroundcolor Red
Read-Host “Press ENTER to exit…”
Exit
}
}
Else
{
write-host „`tDone. No user or group found in Azure AD`n“ -Foregroundcolor Yellow
}
#endregion
#region Checking if new address exists in EXO
Write-Host „Checking the address $NewGroupAddress in Exchange Online “
$MatchedUnifiedGroup = Get-UnifiedGroup -Identity $NewGroupAddress -ErrorAction SilentlyContinue | select Name, EmailAddresses
$MatchedRecipient = Get-Recipient -Identity $NewGroupAddress -ErrorAction SilentlyContinue | select Name, EmailAddresses
if (($MatchedUnifiedGroup -ne $Null) -or ($MatchedRecipient -ne $Null))
{
$MatchedEXO = $true
If ($MatchedRecipient -ne $Null)
{
Write-Host „`tDone. receipint $($MatchedRecipient.name) contains the following addresses: $($MatchedRecipient.EmailAddresses) `n“ -Foregroundcolor Yellow
}
Else
{
Write-Host „`tDone. Unified Group $($MatchedUnifiedGroup.Name) contains the following addresses: $($MatchedUnifiedGroup.EmailAddresses) `n“ -Foregroundcolor Yellow
}
Write-Host „The new address already exists`n“ -Foregroundcolor Red
Read-Host “Press ENTER to exit…”
Exit
}
Else
{
Write-Host „`tDone. No user or group was found in Exchange Online`n“ -Foregroundcolor Yellow
}
#endregion
#region Adding the new address
Write-Host „Finished all checks. Moving forward…`n“ -Foregroundcolor Green
if (!$MatchedMSODS -and !$MatchedEXO)
{
$Objid = (Get-UnifiedGroup $CurrentGroupAddress).ExternalDirectoryObjectId
Write-Host „Adding $NewGroupAddress in Exchange Online“
# add the new address
Set-UnifiedGroup -Identity $CurrentGroupAddress -EmailAddresses: @{add=“smtp:$NewGroupAddress“}
do
{
sleep 10
$CounterEXO–
$CheckEXO = Get-UnifiedGroup -Identity $NewGroupAddress
}
while (($CounterEXO -ge 0) -and ($CheckEXO -eq $Null))
if ($CheckEXO -eq $Null)
{
Write-Host „I was not able to add the new address`n“ -Foregroundcolor Red
Read-Host “Press ENTER to exit…”
Exit
}
Else
{
Write-Host „`tDone.`n“ -Foregroundcolor Yellow
}
Write-Host „Adding $NewGroupAddress in Azure AD“
# Changing the primary address to force the sync
Get-UnifiedGroup $CurrentGroupAddress | Set-UnifiedGroup -PrimarySmtpAddress $NewGroupAddress
do
{
sleep 10
$CounterMSODS–
$CheckMSODS = Get-MsolGroup -All -SearchString $NewGroupAddress | select emailaddress
Write-Host „`tPlease wait…“
}
while (($CounterMSODS -ge 0) -and ($CheckMSODS -eq $Null))
if ($CheckMSODS -eq $Null)
{
Write-Host „I was not able to sync the new address`n“ -Foregroundcolor Red
Read-Host “Press ENTER to exit…”
Exit
}
Else
{
Write-Host „`tDone.`n“ -Foregroundcolor Yellow
}
# Changing back the primary address
Get-UnifiedGroup $NewGroupAddress | Set-UnifiedGroup -PrimarySmtpAddress $CurrentGroupAddress
Write-Host „`nAll Done! Wait 15 mins before doing a test!`n“ -Foregroundcolor Yellow
Read-Host “Press ENTER to exit…”
Remove-PSSession $O365Session
}
#endregion

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