Add proxyAddresses to Active Directory users when created in PowerShell - powershell

Question

I am trying to add users in Active Directory. Those users need to have proxyAddresses. My problem is that those proxyAddresses are multiples and stored in an array.
I try :
$proxyAddresses = #("address1#test.com", "address2#test.com", "address3#test.com")
$userInstance = new-object Microsoft.ActiveDirectory.Management.ADUser
$userInstance.ProxyAddresses = $proxyAddresses
New-ADUser test -Instance $userInstance
And I get this error :
Invalid type 'System.Management.Automation.PSObject'. Parameter name: proxyAddresses
I would like to add this proxyAddresses array to the attribute proxyAddresses of my AD user but it don't seem to be possible.
Any idea how this could be done?

Answer 1

Anything wrong with using Set-ADUser?
$username = '...'
$proxyAddresses = 'address1#example.com', 'address2#example.com', 'address3#example.com'
New-ADUser -Name $username
Set-ADUser -Identity $username -Add #{
'proxyAddresses' = $proxyAddresses | % { "smtp:$_" }
}

Answer 2

I just had this same issue and I was pretty sure I was passing in a string array (that's how it was declared).
Problem was just before I sent my string array into AD I was passing it to "Sort-Object -Unique" - which unbeknownst to me was changing either the type or something that made the cmdlet unhappy.
Just FYI...Sort-Object can burn you in these circumstances.

Answer 3

So, in my testing of this. I made Get-ProxyAddresses at https://gist.github.com/PsychoData/dd475c27f7db5ce982cd6160c74ee1d0
function Get-ProxyAddresses
{
Param(
[Parameter(Mandatory=$true)]
[string[]]$username,
[string[]]$domains = 'domain.com'
)
#Strip off any leading # signs people may have provided. We'll add these later
$domains = $domains.Replace('#','')
$ProxyAddresses = New-Object System.Collections.ArrayList
foreach ($uname in $username) {
foreach ($domain in $domains ) {
if ($ProxyAddresses.Count -lt 1) {
$ProxyAddresses.Add( "SMTP:$uname#$domain" ) | Out-Null
} else {
$ProxyAddresses.Add( "smtp:$uname#$domain" ) | Out-Null
}
}
}
return $ProxyAddresses
}
It just returns as a collection. Pretty kludgy, but works for what I need. It also assumes the first username and first domain are the "primary"
I combined that with #ansgar's answer and tried just -OtherAttributes on New-Aduser
$proxyAddresses = Get-ProxyAddress -username 'john.smith', 'james.smith' -domains 'domain.com','domain.net'
New-ADUser -Name $username
-OtherAttributes #{
'proxyAddresses'= $proxyAddresses
}
Works perfectly and added the proxyAddresses for me right at creation, without having to have a separate set action afterwards.
If you are Going to do separate actions, I would recommend to use -Server, like below, so that you don't run into talking to two different DCs by accident (and you also know that the New-ADUser is finished and already there, you don't have to wait for replication)
#I like making it all in one command, above, but this should work fine too.
$ADServer = (Get-ADDomainController).name
New-ADUser -Server $ADServer -name $Username
Set-ADUSer -Server $ADServer -Identity $username -Add #{
'proxyAddresses' = $proxyAddresses | % { "smtp:$_" }
}