When creating a Delete Policy or Keep Policy to go back an ‘xx' amount of time for a Mailbox, OU, Mailstore or Group, what does the Delete Policy look at to determine what messages should be removed from the database? Is it the date of the actual message (MessageDate), or the date the message was invested into ArchiveManager (DateProcessed)?
When creating a Keep or Delete Policy and the 'Keep For' or 'Delete After’ value is specified (Days, Weeks, Months, Years), the Retention Engine looks at the value in the MessageDate column for each message in the Message table in the ArchiveManager SQL database. Based on the MessageDate and the value specific in the policy it will determine if the message is subject to retention and commit the changes to the database if necessary.