Hi all, I just tested out free/busy replication betwen two forests (one forest has exchange 2003 and another forest has exchange 2007) by using inter-organization replication tool (GALsync setup already). No error generated. Exchange 2003 users can see the free/busy info from exchange 2007 but, exchange 2007 users can not see the free/busy info from exchange 2003 I configured the Add-AvailabilityAddressSpace -ForestName <Legacy Exchange SMTP domain name> -AccessMethod PublicFolder and Disable "Required SSL" for the pub folder since all roles are in one box by following http://technet.microsoft.com/en-us/library/ee307369(EXCHG.80).aspx Why do exchange 2007 users still NOT see the free/busy info from exchange 2003? What am I missing? Thanks a lot.

Anyone from Microsoft? I followed the eact steps as the link mentioned. But, eexchange 2007 users still can NOT see the free/busy info from exchange 2003 across forests? How should I troubleshoot this? Thanks.

Did more digging and found out: If exchange 2007 users use Oulook 2003 and can see the exchange 2003 users' F/B across the forest. But exchange 2007 users use outlook 2007 and can NOT see the exchange 2003 users' F/B across the forest. Just wonder: I added Add-AvailabilityAddressSpace -ForestName <Legacy Exchange SMTP domain name> -AccessMethod PublicFolder already, why exchange 2007 users use outlook 2007 and can NOT see the exchange 2003 users' F/B across the forest? is there a way to find out whether Add-AvailabilityAddressSpace -ForestName <Legacy Exchange SMTP domain name> -AccessMethod PublicFolder applied? Thank you.