The United States Postal Service (USPS) is issuing a mandatory software update for the PostalOne! production system this weekend. This update will be implemented on Sunday, October 29, 2017. The PostalOne! Production (PROD) system will not be available during this update process, on Sunday morning October 29, 2017 from 12:00 AM to 10:00 AM CT. PostalOne! will then be updating the Test Environment for Mailers (TEM) on Monday, October 30, 2017 from 7:00 AM to 2:00 PM CT and TEM will be unavailable during that update period.
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