Testing Sieve external lists

As usual for Sieve filters, the   utility  is one way to do some checking and testing on Sieve external lists. And it may be worth making special note that use of the utility with the switch   will show some details of operation of the    mapping table  lookup; this may be especially useful for debugging or confirming correct configuration of a   mapping table.

See also:
 * test -expression utility
 * Sieve external lists