Modify Active Directory attributes

Question

I have a strange query here -
I am working with a small base of active directory users. Their account properties in active directory has all the information like phone, email, webpage etc. Only recently all of the users migrated to Gmail which means that their username remains same for
ex. firstname.lastname but their email part changed to Gmail.com.
So earlier it was [email protected] & now it
[email protected]
Is there a way I can change just the domain part of their email through Powershell? In otherwords, can I change AD attribute, in this case email without going through them manually.
Thanks in advance.

Answer 1

Assuming you need to modify the mail attribute, this PowerShell V1 script should work. However, I have not tested this:
$Searcher
= New-Object System.DirectoryServices.DirectorySearcher
$Searcher.SearchRoot
= "LDAP://dc=MyDomain,dc=com"
$Searcher.PageSize
= 200
$Searcher.SearchScope
= "subtree"
# Retrieve all objects with an email address using @xyz.com.
$Searcher.Filter =
"(mail=*xyz.com)"
$Searcher.PropertiesToLoad.Add("distinguishedName") >
$Null
$Searcher.PropertiesToLoad.Add("mail") >
$Null
$Results =
$Searcher.FindAll()
ForEach ($Result
In $Results)
    $DN
= $Result.Properties.Item("distinguishedName")[0]
    $Email
= $Result.Properties.Item("mail")[0]
    # Modify email address.
    $Email
= $Email.Replace("@xyz.com",
"gmail.com")
    # Bind to the user object.
    $User
= [ADSI]"LDAP://$DN"
    # Assign new value.
    $User.mail
= $Email.ToString()
    $User.SetInfo()
Richard Mueller - MVP Directory Services
Richard, 
I need a script which is almost identical to this in Powershell V2 format... are you able to help?