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Upgrading the ACN email service

The Administrative Computing Network (ACN) Exchange email service is soon going to be upgraded.

University Information Services (UIS) is upgrading the ACN email service. This will be accomplished behind the scenes in a phased approach, with minimal disruption to your managed administrative desktop. It will, however, change the way you access your email remotely.


As well as allowing for easier system administration, moving to a newer version of Exchange Server now will bring a number of benefits for end users, including:

  • the ability to use more services and applications, notably Office 2016
  • the ability to publish and share calendars with other staff inside and outside of the ACN
  • larger folder item limits
  • a new, cleaner, Outlook Web Access interface, fully supported by most web browsers, not just Internet Explorer
  • support for newer mail clients, both desktop and mobile.

How you will be affected

You will receive a notification email from UIS [view a copy of this email] telling you when your account is scheduled to be upgraded, and informing you that you may need to take action:

  1. You will need to restart Outlook on your desktop
  2. You will need to update your browser bookmark for ACN webmail access.
  3. If you also access your mailbox away from your managed desktop PC, e.g. on personal mobile devices), you will need to manually update your email client settings (see instructions below)
  4. You should not notice a difference in the way you access Public Folders, the Global Address List and delegated access.


UIS will start the migratiing the University's 4,000 administrative email system in late June, migrating 50-100 users at a time. We expect the process to take around six weeks.

How to reconfigure devices that have not been automatically reconfigured

Your desktop PC workstation will have been reconfigured automatically, and when you restart Outlook it will update itself with the new mailbox setting.

Update your browser bookmark

If you used a browser bookmark for, you will need to create a new one for the updated web interface at

Updating Mac desktops and personal mobile devices

If you use a Mac desktop, or any other devices to check your email (e.g. phones, tablets or laptops), however, you will need to manually update your email client's Server setting:

Outlook 2013/2016 (Windows)

Outlook (Mac)

Outlook App

Windows Mail

Apple Mail (Mac OSX/macOS)

Apple Mail (iOS)

Mail (Android/ActiveSync devices)