Can Exchange 5.5 and Exchange 2000 organizations see each other's free/busy information?
Exchange Migrator 1.x
Exchange Migrator 2.x
You will only be able to see the calendars of the mailboxes that are on the same side. In other words, the mailboxes that have been migrated to the Target will be able to see the rest of the mailboxes on the Target. The same is true for the Source side as well. Mailboxes that have been migrated to the Source will be able to see the rest of the mailboxes on the Source. The reason for this is because you are dealing with two different directories, Exchange 5.5 and Exchange 2000 cannot see each other without using additional tools.
One alternative is to use the Microsoft InterOrg utility. To see more on this, please refer to the following knowledge base article:
- Does Exchange Migrator synchronize Free/Busy between Orgs?