Checking the Effectiveness of a Transport Rule to Block Spammy Email

Some weeks ago, I wrote about using a transport rule to suppress spammy email by sending the messages to the quarantine. But what’s the best way to check the rule’s effect? One method is to use the transport rule report PowerShell cmdlet to check for the actions you expect the rule to perform. Once information is found, it’s a matter of slicing and dicing the data.

https://office365itpros.com/2025/11/26/transport-rule-effectiveness/