Email Protection Basics in Microsoft 365: Bulk Email

When will Microsoft publish an update on their rationale of creating the massive bulk filtering dumpster fire in recent weeks?  Messages previously marked with a BCL of 1 for years, are now suddenly getting classified with a BCL of 5 or 6, causing these messages in organizations to be marked as spam and delivered to Junk Email to scenarios where now these seemingly safe and trusted messages are getting quarantined!  Outrageous!

The only recourse of pathetic solutions offered are "oh, add the senders to the Tenant Allow/Block List" and "report submissions to Microsoft" - both an utter joke.

So now we have to go through hundreds of sender addresses to submit them to Microsoft repeatedly, over and over and over and over again, just to say we're doing something to appease the masses, but in reality, even when submissions verdict comes back with "oh hey, yea we messed up" or "Should not have been blocked result", messages still continue to get tagged with the same high BCLs, almost as if nothing was done to actually fix the issue!

So we're now left with another fantastic option offered by Microsoft: just bypass all the other security protections of the Defender protection stack for these sender addresses by adding the senders to your Tenant Allow/Block List.  Ok great, one might think, email is getting delivered to the Inbox now, because all of a sudden we now trust ALL email from these senders and just don't care.  Issue fixed, onto dealing with another Microsoft introduced problem....

No wait, what's that, I've spent hours sorting through these messages, adding hundreds of addresses to the TABL...501th address, new milestone...what...limit exceeded?! The maximum number of allow entries is 500! Now what....well I guess we'll just have to adjust the bulk email threshold slider to 8, yes, that will finally fix the issue.  All these emails from our trusted partners are now back again getting delivered to Inboxes...hooray! 

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Oh no, what's that, you're now getting all this junk email delivered to your inbox? The vicious cycle continues....