hi,
my school uses office 365 for email. I've been receiving up to 100 emails from the 'Mail Delivery System' and 'MAILER-DAEMON' for emails failing to send. The problem is that the emails that they are failing to send I never sent in the first place... Has someone hacked my account or is this a program fault? The messages have no understandable content as they seem to all be in computer code? Help please!