Sieve language extension MTA options

Normally, Sieve extensions are enabled in individual Sieve  scripts via use of the standard Sieve   action; and for convenience in combining Sieve scripts, the MTA by default is lenient in permitting use of multiple   clauses (but see the   MTA option). However, for a few special cases of potentially computationally "expensive" actions, the MTA permits the mail system administrator to restrict enabling these extensions. Also see the Sieve filter limit MTA options,  as setting the maximum allowed number of some types of action to 0  effectively disables use of that action. And see the Sieve filter interpretation MTA options which can modify how certain Sieve operations are interpreted or performed.

See also:
 * enable_sieve_body MTA Option
 * enable_sieve_ereject MTA Option
 * enable_sieve_regex MTA Option
 * notify_ignore_errors MTA Option
 * strict_require MTA Option
 * enable_sieve_memcache MTA Option
 * enable_sieve_metermaid MTA Option
 * enable_sieve_redis MTA Option
 * Sieve filter limit MTA options
 * Sieve filter interpretation MTA options
 * Sieve supported extensions
 * Sieve filter MTA options
 * MTA options