LDAP lookup cache MTA options

There are a number of MTA options controlling the caching of LDAP and URL lookup results. See also the  MTA option, controlling  how long the MTA waits for a response from LDAP before timing out a query attempt.

Note that the MTA has no specific-to-itself setting for caching of authentication (SMTP AUTH) results from LDAP; that is instead controlled by the general (base level) settings for the  and   options (in legacy configuration, the   parameters   and  ).

The MMP has its own cache of of the results of searching for users in LDAP; see the  and   options.

See also:
 * authcachesize Option
 * authcachettl Option
 * ldapcachesize Option
 * ldapcachettl Option
 * ldap_timeout MTA Option
 * alias_entry_cache_negative MTA Option
 * alias_entry_cache_size MTA Option
 * alias_entry_cache_timeout MTA Option
 * cache_debug MTA Option
 * domain_match_cache_size MTA Option
 * domain_match_cache_timeout MTA Option
 * filter_cache_size MTA Option
 * filter_cache_timeout MTA Option
 * ldap_domain_timeout Option
 * reverse_address_cache_size MTA Option
 * reverse_address_cache_timeout MTA Option
 * url_result_cache_case MTA Option
 * url_result_cache_size MTA Option
 * url_result_cache_timeout MTA Option
 * MTA options
 * Direct LDAP MTA options