[jcifs] JCIFS for Multiple Domains

[Merlin Beedell]

Is there a good/standard/any way to create a [Tomcat] Website that can use 
JCIFS to provide Single Sign On for MULTIPLE domains.  In other words, for 
the website to determine which company the user is coming from, and then to 
target that company's Active Directory using JCIFS for authentication.

As I understand it, JCIFS runs at the site level, which means that it can 
only work with a single LDAP/Active Directory host. [We have it working in 
this way]. However...

Let us assume that a single company has aquired 2 other companies. They 
operate 3 separate active directories, all be it in a forrest.  The Web site 
allows people from all 3 companies to access it.  Once the web has 
determined which company the user is from, then it needs to do a JCIFS 
lookup for sign-on.

Is this even possible?

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