Using filenames rules

[Jesus Garrote]

Hello all,

We want to block attachments via filename rules for ALL of our users,
except for staff.

Is it possible to do this without writing N lines in "filename.rules" like: ?

From:   user1@* <rule_staff>
From:   user2@* <rule_staff>
...
From:   userN@* <rule_staff>
FromOrTo:       default         <rule_default>

Thanks in advance,

        Jesus