SPF LOCAL mapping table

The  mapping table, if defined, provides a way to avoid performing actual DNS lookups for SPF verification of any domains matching a pattern in the mapping table: instead,  the mapping table template of a matching entry will be used as if it were the DNS result of an SPF lookup. Thus, this mapping table allows providing "short-circuited" results for specified (typically local) domains.

The syntax is: SPF_LOCAL domain-pattern   result

See also:
 * spfhelo Option
 * SPF MTA options
 * Mapping tables