This is an automated archive.
The original was posted on /r/sysadmin by /u/ifpfi on 2024-01-22 19:10:01+00:00.
We have been receiving spam for the last 2 months from domains that end in .onmicrosoft.com and I have been reporting these messages every way I know how. Now it has come to bite them back as I just checked the reputation of an IP address that just spammed us and it is a shared O365 address. This means users of O365 will have a hard time getting their mail through to everyone else.
I even tried reporting the spam through the CERT tool and it came back with “This report could not be validated, no action was taken.”
This is what you get Microsoft
Every day I am happier and happier I do not, and never will, use Office 365.