Forum Discussion
BLocking incomming email
My company is using 365 for email. Recently, we have started seeing an uptick in spam/phishing emails. To combat this a colleague setup a mail flow rule in exchange admin to block emails from a list ...
Yes, there is limitation at around 120 to 150 Email address per mail rule, btw, you might consider using the Tenant Allow/Block List in Microsoft Defender for Office 365, which allows for a higher number of block entries