How to block an individual email address in M365 tenant?

[cheaptonersucks]

Hi,

I have found how to block an entire domain but how do I block an individual email address (Gmail) and not the entire domain in the M365 tenant please?

Thanks! ☺️

[DalekSec]

We setup an email rule, then add the various address to go to quarantine by setting their confidence score to very low 

[cheaptonersucks]

Thanks DalekSec, is there a way to block an individual email, maybe in mail flow?

[DalekSec]

42 minutes ago, cheaptonersucks said:

Thanks DalekSec, is there a way to block an individual email, maybe in mail flow?

 

You can do it the way i said, can set the sender address, 

[cheaptonersucks]

Thanks, does your way guarantee that the email doesn't get through?

[DalekSec]

As far as i'm aware none have made it past qurantine 

[CHiLL]

Can you not just a mail flow rule to apply to specific email addresses, then block incoming emails from said address? Assuming that's the outcome you want to achieve that is.

[djm968]

https://security.microsoft.com/tenantAllowBlockList

[cheaptonersucks]

Thanks guys, I will create a mail flow rule and just add the specific email address. 

[cheaptonersucks]

I thought that I could only block domains with mail flow rules but I noticed that it is possible to block individual email addresses. Which is what I need to do.