We are currently aware of issues on our Hosted Exchange / Manage Outlook service. We have removed the faulty server causing disruption from the cluster and will be applying some fixes on this server later tonight. There may be some further intermittent breaks of outlook connectivity while the server is patched during the outage window. We expect maintenance of the cluster between the hours of 9pm and 12am tonight. If you have any questions, please feel free to contact us.