Overwhelmed by onmicrosoft.com SPAM EMAILS

Yes, Steven42, "The obvious solution is to block all emails coming from an "onmicrosoft.com". My issue is that I HAVE blocked any emails with "onmicrosoft.com" in the sender address, AND IT DOESN'T WORK! I believe Microsoft has nullified rules pertaining to "onmicrosoft.com". Those damn emails CAN'T be blocked using their Outlook email program (OWA). The spammers use it because it says Microsoft in the address, which give it legitimacy. They PAY Microsoft for that privilege, and it bypasses rules and goes thru to annoy those who use a FREE email system. If this isn't criminal, it at least sure isn't ethical.

I also think you are correct that Microsoft doesn't care and has no plans or incentive to fix the issue.

I'm thinking of dumping OWA for Gmail. At least their filters work.

Microsoft, are you listening?????

the same issue spam from onmicrosoft everyday, of course can do some rule to block but, should take action from ms to clear out such spam account.

Anyone gotten any feedback from MS concerning this? Ever since I found this forum post I've been sending the full headers of what our server has been getting to both report_spam and cdoccm. 265 since Dec 7th. 19 of them so far today. Beyond getting the standard auto-reply from "The Outlook Team", I haven't heard anything.

I've set up flows in power automate, so microsoft are 'kind of' made responsible for actually doing the spam removal work, even if I have had to set it up, https://make.powerautomate.com/ -> 'my flows' -> new flow -> call it 'spam block' or such, create a rule for outlook 'When a new email arrives (V2)' (to the junk folder, as only trusted emails should be going to inbox anyway)
Then add a condition (keep adding them as 'or' conditions) with condition 'from' - 'contains' - 'onmicrosoft.com' (you can choose any parts of an email, eg. 'body' or 'subject') then on the 'if' any of these or conditions (there's a limit of 10 per flow condition I've found) then do action 'delete email' (just goes to deleted items, as it would if manually deleted) and leave 'no' empty (email will just stay in junk if that's where it's gone).
Obviously, don't make the filters too wide ranging, try to be as specific as you can be to the junk email wording, or you might delete non junk in with them.

Hi Terri R!

Thank you for the feedback.

Perhaps, you may contact Google Support Team for Gmail.

Best Regards, Shakiru