Exchange 2003 global address list, 2 domains, same email FQDN. How to address domain B to display in GAL

We recently upgraded our two Win 2000 Exch 5.5 domains to the following...

Domain A Win 2003 Exch 2003
Domain B Win 2000 Exch 2000

Prior to the upgrade Domain A was accepting mail for both domains and forwarding to domain B through site connectors. We were and are using a hardware VPN and a two way trust. Currently, unresolved mail is being forwarded to domain B through the default Virtual Server. All email is being recieved at the proper mailbox and mailboxes are local to each domain. Each domains Recipient Policy points to the local domain as well as the FQDN, DNS is fully functioning and all NETDIAG, DCDIAG tests pass. My issue is, how do I get the users from Domain B to show up in the Domain A GAL? Because of the common @abc.com format if I add a user from Domain B to Domain A's AD, I get message looping. All I need to accomplish is having a common GAL for both domains.

THANKS  
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mungchimpAsked:
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BNettles73Commented:



I'm assuming you have two separate forests / organizations ...


You may be able to use the IIFP utility ... I'm pretty sure it's free and is an alternate solution to using the MIIS ... the drawback is it requires SQL.

GAL Sync with the Identity Integration Feature Pack (IIFP)
http://www.msexchange.org/pages/article_p.asp?id=668

The full version (Microsoft Identify Integration Server) is not free ... but if you are interested you can read more at the link below:

Microsoft Identity Integration Server 2003 Global Address List Synchronization
http://www.microsoft.com/windowsserversystem/miis2003/techinfo/planning/miisgalarch.mspx

"Organizations that deploy multiple forests might deploy Microsoft Exchange 2000 Server and Microsoft Exchange Server 2003 in more than one forest in their organization. This results in separate global address lists in each forest. To enable users to view the same GALs across these forests, the GALs can be synchronized by using Microsoft Identity Integration Server (MIIS) 2003 and the GAL synchronization management agent. This paper provides a detailed description of how this can be achieved using MIIS 2003."
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BNettles73Commented:
FYI ... http://hellomate.typepad.com/exchange/tools_utilities/


"A Question of Organisation Synchronisation
A question that comes up frequently in the newsgroups and on various mailing lists is how to synchronise two Exchange global address lists together. Exchange MVP Ed Crowley has often responded to such queries with the list below and I feel it makes quite a useful list to have at hand. Ed has kindly allowed me to duplicate this information here - thanks, Ed!

Available options to replicate directories between organisations include:

1. HP LDAP Directory Synchronization Utility (LDSU)
2. Microsoft Identity and Integration Server (MIIS)
3. MIIS GAL Sync tool (limited but free)
4. SimpleSync
5. MS Mail Dirsync (unsupported by Microsoft, but is supposed to work)
6. Active Directory Connector (in interorganizational mode)
7. Your own code"
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