Exchange Mailbox store

Hi

Today morning I normally came to office and opened my outlook and keep checking mails, I got a mail from my Enterprise Admin saying that he enabled access permissions to me on local exchange box.

Casually I logged into the exchange box where my mail box is configured I noticed that in Administ.. group under my mailserver Mailbox store and Public folder both are unmounted, I checked all exchange related services all are working fine and even my outlook is working fine I am able to send mails and recieve mails also. My question is How it is possible?

I checked routing groups in that I noticed connections to US office and head office for local location, is this might caused this?

I want your help.