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Suspicious emails not blocked
Usually Exchange Online spam filter is quite good on filtering spam and emails with malicious links. But one user has received fake "Mail Validation" email with Office 365 logo and links going into s...
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.
Same user received another similar email. This time from another server. It has same design. Office 365 logo, green message "This message is from trusted user". It is unsettling that such an obvious phishing practice is not blocked. It uses some gibberish links in the email, which alone should mark this email as useless junk. We don't have ATP. Will try to report this email from Outlook on Monday.