Forum Discussion
BCL Values
You could use the Mail traffic reports from the https://technet.microsoft.com/en-us/library/dn500744%28v=exchg.150%29.aspx?f=255&MSPPError=-2147217396#BKMK_Viewmailprotectionreportsintheoffice365admincenter or from powershell using the https://technet.microsoft.com/en-us/library/jj200682%28v=exchg.160%29.aspx?f=255&MSPPError=-2147217396 cmdlet
What would you do to "see how it goes"?
After updating the value, monitor if you are getting more or less or same amount of junk mail that is being received. You can evaluate over a couple of days to get a better picture.
How do you monitor? Is there a chart or graph somewhere?
You could use the Mail traffic reports from the https://technet.microsoft.com/en-us/library/dn500744%28v=exchg.150%29.aspx?f=255&MSPPError=-2147217396#BKMK_Viewmailprotectionreportsintheoffice365admincenter or from powershell using the https://technet.microsoft.com/en-us/library/jj200682%28v=exchg.160%29.aspx?f=255&MSPPError=-2147217396 cmdlet