Get sAMAccountNames from CSV of Proxy Address powershell

Question

I have got the value in the file is under the SMTPproxyaddresses header.So, I'm trying something along this lines.

foreach ($user in $userID)
{

    $ADuser = Get-ADUser -Filter "ProxyAddress -eq $($user.SMTPproxyaddresses)" -Properties whenCreated, Enabled, SAMAccountName
}

CSV file :

SMTPproxyaddresses
userproxy@contoso.com
testproxy@contoso.com
user2proxy@contoso.com
user3proxy@contoso.com

Answer 1

I couldn't get it working with a variable inside the Filter parameter, but it worked typed outright. However, the alternative is using an LDAPFilter and this worked for me.

    Get-AdUser -LDAPfilter "(ProxyAddresses=*$($user.SMTPaddresses))" -Properties whenCreated, Enabled, SamAccountName