The United States Postal Service® (USPS® ) issued a mandatory software update for the PostalOne! production system. This update was implemented on Sunday, August 14, 2016. PostalOne! updated the Test Environment for Mailers (TEM) on Monday, August 15, 2016, from 6:00 am to 3:00 pm CT. The TEM environment will not be available during this time. The new Mail.dat® client download for the Production Environment will be version 184.108.40.206_PROD; all previous versions of the Mail.dat client will expire.
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