The time of Symantec Messaging Gateway (SMG) based in Brazil and set to use NTP servers would be not correct from the 21st of October until the 4th of November.
Brazil Daylight Saving Time start date has changed from 21st October to 4th November.
The Brazillian President has changed the Daylight Saving Time (DST) start date. New date is the 4th of November instead of the 21st of October. The change applies starting in 2018.
Brazil will start Daylight Saving Time (DST) later than normal. Clocks will be turned back one hour from 12:00 (midnight) to 11:00 (11 pm) local time on Sunday, November 4, 2018.
Set the SMG time manually. After the 4th of November the SMG time can be configured to use NTP servers again.
You must have Full Administration rights or Manage Settings modify rights to configure time settings.
To Set time manually in Control Center and Scanners time setting: