Forum Discussion
Suspicious emails not blocked
Every email had the same IP address of a sending device, some Windows box with default computer name (DESKTOP-blabla). I've been advised to create a mail flow rule to block emails from this IP and so far the user is not receiving them.
Lots of scammers/phishers are using cloud services nowadays, which are often times implicitly trusted by clients/providers. You can try reaching someone at the company and let them take action, and you can also report this as phishing so that the O365 team can take a deeper look why it failed detection.
I know. I had to fight spammers using AWS with dynamic IPs when still using hosted Exchange. And a few months back have reported same spammer to MailChimp 3 times i think. Anyway, is there some form to report phishing in Office 365 admin center, Security & Compliance center?
You can report it directly from within Outlook/OWA.