We will be updating the servers that provide the DNS records for all addresses on the msexchangeoutlook.com domain on Friday, August 30, 2019, at 10 pm EST (7 pm PST). This update is being made to facilitate a greater ease of management of these records. There is no anticipated downtime associated with this change. Customers may be prompted to re-authenticate once the change takes effect. Aside from the potential re-authentication, there is no required action to allow this change to take effect.