They have email addresses because that is how Exchange routes system messages. :P
In later versions of Exchange, they switched to using GUIDs so that the system messages never show up in other places. If you have Exchange 2003 in your environment, you don't want to mail-disable them. From: Alexander Rose [mailto:arose...@gmail.com] Sent: Thursday, February 7, 2013 11:36 AM To: MS-Exchange Admin Issues Subject: Why are some System PF mail enabled? Hi, I am setting up directory synchronization on FOPE. I have added one of our domain and enabled it, sync went successfully but i see a lot of System Public Folders being pushed to the Users provisioning. System PFs for some reasons are mail enabled, on the dozen of StoreEvents folders i see in the PF management console, a few are mail enabled. So is Schema, schema-root, exchweb,...and OAB\First Administrative Group (remaining of our 2003 servers). I am not sure yet how i can prevent FOPE from provisionning these PFs as user accounts, or would it be safe to mail disable them? --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe exchangelist