The following actions can be applied to messages that match a rule filter:
ACTION="ARCHIVE_ITEM" - Archive the message. This is the default action if you do not include the ACTION= clause or a message does not match any of the rules.
With this action you can have additional actions: assigning a retention category (RETENTION="<retention_category>") to the item, sending the item to a specific archive (ARCHIVEID="<archive_ID>") and assigning a particular content category.
ACTION="MARK_DO_NOT_ARCHIVE" - Do not archive the message; leave it in the original location.
If you later change the rule action, you can temporarily set the Override registry key to 1 to force the task to reprocess marked items.
See Configuring registry settings for Domino server journal filtering.