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If your organization's clients and servers are all running release 5.0.4 (or later), it makes no difference whether you create North American or International IDs. Both types of ID will work the same way. *

However, if your organization has clients or servers running earlier releases (prior to 5.0.4) of Notes and Domino, continue creating the same types of IDs you created with the earlier versions. International versions of earlier releases don't allow users to switch to North American IDs, so when registering new international users, you shouldn't create only North American IDs. Similarly, North American versions of earlier releases use weaker cryptography when running with International IDs, so you shouldn't create only International IDs.

The best strategy for deciding between North American and International IDs is to continue using the decision process that was in place for earlier releases of Notes and Domino. Eventually, as you upgrade the clients and servers running earlier releases to 5.0.4 (or later), the decision will not matter.

* For International IDs, 630 bit encryption will be used for port encryption. International ID encryption for Notes Mail will remain at the 512 bit encryption strength for R5.0.4. Plans call for international ID mail encryption to achieve 630 bit strength in a future R5 release.