In Outlook 2007's AutoArchive settings, there is an option to "Delete expired items". According to MS documentation, an "expired item" is any e-mail item over 6 months old. Also, according to the documentation, this feature is not enabled by default.
I found for one of my users that (1) this feature is enabled, and (2) many e-mails are missing from the Outlook mail folders he personally created in his mailbox. In the AutoArchive properties of these folders, "Do not archive items in this folder" is set as the option.
Is the "Delete expired options" setting be the reason e-mails are disappearing? Does it actually override the "Do not archive items in this folder" setting?
AutoArchive was running every 14 days on his computer; I have temporarily disabled it.