cross domain trust group membership pain

Hi Guys,

Not been here in ages and have come across an issue i could use some help with.

What i have is 3 domains

domainA
domainB
domainC

DomainA has a bunch of fileshares with permissions assigned via domainA domain.local groups. the members of those groups are made of of users from domainB and domainC

eg

domainA\group1

contains

domainB\user1
domainC\user3

etc

what i need to do is find out who is a member of which groups

ideally i need to be able to find out

what groups are domainB\user1 a member of in domainA

any ideas?

Not sure this is what you are looking for but maybe. Domains within a Domain is always a pain sorting and tracking!