I work as an IT admin at my company and i just noticed a spam mail containing malware got through our mail filter and it was sent to an email group named AllEmployees@company.com
which means that everyone working at my company got the email. (We use Office365)
I know it's too late to do anything about it now but i want to be prepared if it happens again. Is it possible to make a list of emailadresses and then delete an email from the inbox for everyone?