Add msExchHideFromAddressLists attribute to Active Directory

Add-msExchHideFromAddressLists.ps1

# https://learn.microsoft.com/en-us/previous-versions/office/developer/exchange-server-2007/aa565483(v=exchg.80)
$schemaPath = (Get-ADRootDSE).schemaNamingContext

$attributes = @{
  adminDescription = 'ms-Exch-Hide-From-Address-Lists';
  adminDisplayName = 'ms-Exch-Hide-From-Address-Lists';
  attributeID = '1.2.840.113556.1.4.7000.102.73';
  attributeSyntax = '2.5.5.8';
  isMemberOfPartialAttributeSet = $true;
  isSingleValued = $true;
  lDAPDisplayName = 'msExchHideFromAddressLists';
  CN = 'ms-Exch-Hide-From-Address-Lists';
  oMSyntax = 1;
  objectCategory = "CN=Attribute-Schema,$schemaPath";
  objectClass = 'attributeSchema';
  schemaIdGuid = New-Object Guid (, [byte[]](150,11,28,162,147,176,210,17,170,6,0,192,79,142,237,216));
  searchFlags = 16;
  attributeSecurityGuid = New-Object Guid (, [System.Convert]::FromBase64String("VAGN5Pi80RGHAgDAT7lgUA=="));
  showInAdvancedViewOnly = $true;
}
New-ADObject -Name $attributes.CN -Type attributeSchema -Path $schemapath -OtherAttributes $attributes
$userSchema = Get-ADObject -SearchBase $schemapath -Filter 'name -eq "user"'
$userSchema | Set-ADObject -Add @{mayContain = $attributes.lDAPDisplayName}

Also posted as answer at https://learn.microsoft.com/en-sg/answers/questions/1791320/how-can-i-add-msexchhidefromaddresslists-attribute