You can choose whether the case (uppercase/lowercase) of a text
string is considered when the message
text of a rule is
compared with the destination text in the message source. When
switched on, a match only occurs if the use of uppercase and
lowercase letters is exactly the same in both the message source
and the message text string.
To set case sensitivity
Right-click the policy and select All TasksEdit...
Select Options.
Select or clear Case sensitive check to indicate the
behavior you want.
The setting applies to all new rules in a policy. Click
Apply to all to apply it to all existing rules in a
policy.
NOTE:
You can set case sensitivity for individual rules in a policy by
selecting the button in the Condition tab
of a rule.
Edit...
NOTE:
button in the Condition tab
of a rule.