Question : Joining two domains.

Is it possible in Windows 2003 SBS to join two domains together?  For example,  I have domain A (domainA.com) and domain B (domainB.local).  Can inter-connect the two so that I don't have to authenticate when crossing domains to access resources?  What about DNS?  Do I need to do anything there to join the two?  Active Directory?  Etc....

Thanks!

Answer : Joining two domains.

nprignano is close, but not quite correct.  As he states, SBS domains CANNOT be joined together - you cannot create trusts between them.  Simply adding one regular server will not allow you to create a trust - this restriction is DOMAIN level, not server level.  If you wanted to create a trust between the two domains you would have to upgrade BOTH domains to standard versions of Windows Server using the Transition Pack for SBS 2003.  This is not a cheap thing to as the transition pack essentially costs the savings you had by buying SBS instead of the regular products.  For example, if SBS cost you $3000 for licensing, and Exchange, Windows, and CALs WOULD have cost you $6000 for the full products, then the transition pack will cost you $3000 (Transition Pack $3000 + SBS licensing $3000 = 6000 = what you would have spent on the full products).