I thought that I would share with you a simple script that will add an email domain to your users. This script is handy if you for example would like to add contoso.info to your already existing contoso.com environment. If you are using the email address aaron@contoso.com you want the script to automatically add aaron@contoso.info.
Please note that the domain name that you are adding first has to be added and verified in your Office 365 tenant.
DirSync version (modifying Active Directory using ADSI):
$activeDomain = New-Object DirectoryServices.DirectoryEntry
$domain = $activeDomain.distinguishedName
$searcher = [System.DirectoryServices.DirectorySearcher]"[adsi]LDAP://$domain"
$searcher.filter = '(proxyaddresses=*@contoso.com*)'
$result = $searcher.findall()
$users = $result.Path
$users | ForEach-Object {
$user = [adsi]"$_"
$proxyaddresses = $user.proxyaddresses.Value | Where-Object { $_ -like 'smtp:*@contoso.com' }
foreach ($proxyaddress in $proxyaddresses) {
$newaddress = ($proxyaddress.split ':')[1] -replace '@contoso.com', '@contoso.info'
$user.proxyaddresses.add("smtp:$newaddress")
}
$user.setinfo()
}
Cloud version:
$cred = Get-Credential -Message 'Please enter your Office 365 admin crendentials'
$O365 = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri 'https://outlook.office365.com/powershell-liveid/' -Credential $cred -Authentication Basic -AllowRedirection
$importcmd = Import-PSSession $O365 -CommandName @('Get-Mailbox','Set-Mailbox') -AllowClobber
Get-Mailbox -ResultSize Unlimited -Filter { EmailAddresses -like '*@contoso.com' } | Select-Object Identity,EmailAddresses | ForEach-Object {
$proxyaddresses = $_.EmailAddresses | Where-Object { $_ -like 'smtp:*@contoso.com' }
foreach ($proxyaddress in $proxyaddresses) {
$newaddress = ($proxyaddress -split ':')[1] -replace '@contoso.com','@contoso.info'
Set-Mailbox -Identity $_.Identity -EmailAddresses @{Add="smtp:$newaddress"}
}
}
/ Andreas
Tailspintoys - 365lab.net 