$ADusers = Get-ADUser -filter * -Properties proxyaddresses,givenname,surname,samaccountname,userprincipalname,mail -SearchBase "OU=Users,OU=LAB,DC=ad,DC=lab,DC=se"
$Forestsuffix = $((Get-ADforest).upnsuffixes[0]).tolower()

$Deleteusersonerror = $true


foreach ($ADuser in $ADusers) {

    if (!$ADuser.GivenName)
 {
        Write-Host "Firstname is not configured on user $($ADuser.name). Script will abort next check for this user" -ForegroundColor Red
      continue  }


    if (!$ADuser.Surname)
 {
        Write-Host "Surname is not configured on user $($ADuser.name) Script will abort next check for this user" -ForegroundColor Red
    continue    }




 $expectedUPN = (($ADuser.GivenName.ToLower())+"."+($ADuser.Surname.ToLower())+$Forestsuffix)


   IF (!($ADuser.proxyaddresses | ? {$PSitem -CMatch "SMTP:$expectedUPN"})) {

        Write-host "$($ADuser.name) does not have a correct PRIMARY proxy addresses configured" -ForegroundColor Yellow
        #if ($Deleteusersonerror) {Remove-ADUser $ADuser -Confirm:$false}
       }


   IF (!($ADuser.mail | ? {$PSItem -match $expectedUPN})) {

        Write-Host "$($ADuser.name) does not have a correct Mail configured" -ForegroundColor Blue
        #if ($Deleteusersonerror) {Remove-ADUser $ADuser -Confirm:$false}
        }


   IF (!($ADuser.UserPrincipalName | ? {$PSItem -match $expectedUPN})) {

        Write-Host "$($ADuser.name) does not have a correct UPN configured" -ForegroundColor DarkRed
        #if ($Deleteusersonerror) {Remove-ADUser $ADuser -Confirm:$false}
        }

   IF (!($ADuser.proxyaddresses | ? {$PSitem -CMatch "smtp:"+$($ADuser.SamAccountName)})) {

        Write-host "$($ADuser.name) does not have a correct Secondary proxy addresses configured" -ForegroundColor Yellow
        #if ($Deleteusersonerror) {Remove-ADUser $ADuser -Confirm:$false}
       }














   $Secondaryproxy = ($ADuser.proxyaddresses | ? {$PSitem -CMatch "smpt:" -match $PSitem.samaccountname})
   if (!$Primaryproxy) {
        #DO NOTHING

        Write-host "$($ADuser.ObjectGUID) does not have a matching secondary addresses to the SAMAccountname" -ForegroundColor Yellow


}

}