Follow these steps:
On the Centralized Exceptions Policy page, click Centralized Exceptions.
Under Centralized Exceptions, click Add > Windows Exceptions > Security Risk Exceptions > Known Risks.
In the Known Security Risk Exceptions dialog box, cann't find XM.Mailtab@mm risk
this way doesn't work.
another way,
but from popout box, there is no risk record as XM.Mailtab@mm risk , so can not add to Exceptions
cannot find the malware XM.Mailtab@mm on symantec db
that's the point, how to add this kind of risk to exception.
Customer want to avoid the bother from all this kind of risk.