HomeHacker News Show HN: Canada Posts systems to be down for 6 hours of “unplanned maintenance” https://ift.tt/3zaQKiY byHat hair -December 29, 2021 0 Show HN: Canada Posts systems to be down for 6 hours of “unplanned maintenance” https://ift.tt/2SLa564 December 29, 2021 at 10:07PM Tags: Hacker News Facebook Twitter