Y22K? : Microsoft Exchange malware scanning can’t interpret 2022 dates; Emails undelivered
Reports are pouring in to Twitter of email traffic being frozen for many.
Microsoft's Exchange server formats dates as YYMMDDHHMM, and then stores that
number as a signed 32 bit Integer.
Since YY here changed from '21 to '22 overnight (Happy New Year, by the way!) -
this means that