Read group membership for a user object and populate every group with matching user from another domain

Question

I have LON\JSmith in LON domain and DEL\JimSmith in DEL domain
I would like to extract group memberships of LON\JSmith in LON domain and append matching by email (i.e. DEL\JimSmith) user object in every group in LON domain.
for instance
LON\JSmith and DEL\JimSmith is the same person and has same email address [email protected]
LON\JSmith belongs to 3 groups - LON\localadmingroup;LON\univdesktop;LON\globalsurvey
The outcome of the script should be
LON\JSmith; DEL\JimSmith    should be in 3 groups - LON\localadmingroup;LON\univdesktop;LON\globalsurvey.
How can i do it?
Navgup

Answer 1

Hi Navgup,
Please refer to the script below, to query users in other domain by specifying the parameter "-Server" in the cmdlet "get-aduser", and also note I haven't tested the script below:
import-module activedirectory
get-adgroupmember "group"|foreach{
$email=(get-aduser $_.samaccountname -properties *).EmailAddress#get the user email
Get-ADUser -filter {EmailAddress -eq $email} -properties * -server DomainB.company.com|select samaccountname, memberof}#filter user name and group with the email in other domain
To get users across domain, please also refer this blog:
Adding/removing members from another forest or domain to groups in Active Directory:
http://blogs.msdn.com/b/adpowershell/archive/2010/01/20/adding-removing-members-from-another-forest-or-domain-to-groups-in-active-directory.aspx?Redirected=true
I hope this helps.