Whilst trying to solve an issue, I strayed into the folder “c:\users\username\AppData\Roaming\Microsoft\Outlook”.

I can see the profile.xml, Outlprnt and profile.srs files. I know what they are.

*.srs  –  send/receive settings for the email profile 

*.xml  – This file holds customization settings for the Navigation Pane in Outlook 2003 and later. Most notable settings are, Favorite Folders, Shortcuts from the Shortcuts Navigation and opened shared folder lists in the Calendar, Contacts, Tasks and Notes and Journal Navigation.

Outlprnt – This file contains the print style settings.

See more here http://www.howto-outlook.com/howto/filesandsettings.htm

What is the PB4S-Configuration-name@domain.xml file ?

I find very little about this file and it’s settings online. It turns out that this is the Outlook Protection rules file. If you have assigned Outlook Protection rules or your server supports this feature, this file contains the information needed to apply it. In basic terms what is Outlook Protection rules ? I view it like DRM for email. (Digital Rights Management).

Basically rules about who you can forward types of emails to, what access you have to reply etc. Maybe it should be called Email Rights Management 🙂