Direct LDAP usergroup lookup MTA options

There are a number of MTA options relating to direct LDAP alias lookups (including user lookups, group lookups, and mailing list lookups) and address reversal lookups.



 The, and   MTA options  are the major options for defining the direct LDAP alias and reverse lookups, while the (not usually modified)    can potentially affect the timing of when -- or even whether -- such direct LDAP lookups are performed. 

 Additional options further refining/modifying the alias and reverse lookups include the ,  ,  ,  ,  , and   MTA options. 

 The  and   MTA options control the caching of alias and address reversal lookup results; for further discussion see the discussion of  LDAP lookup cache MTA options. 

 The  MTA option affects the timing of the MTA&#x27;s alias expansion of group and list entries, which has implications on operation of such aliases. 

 The,  , and   MTA options set the basic location in the DIT and objectClasses for the user/group entries in the DIT; see also Direct LDAP attribute name MTA options for the LDAP attributes expected/recognized in user and group entries. 

 The,  ,  , and    MTA options affect the interpretation (and validity of values)  of certain LDAP attributes found during alias lookups; see  Direct LDAP attribute interpretation MTA options for further discussion. 

 The,  , and   MTA options relate to "head of household controls" or "parental controls" applicability to users or aliases; further discussion of  "head of household" Sieve filters can be found in Head of household Sieve filters. 



See also:
 * Aliases in LDAP
 * alias_magic MTA Option
 * alias_url0 MTA Option
 * alias_url1 MTA Option
 * alias_url2 MTA Option
 * alias_url3 MTA Option
 * allow_unquoted_addrs_violate_rfc2798 MTA Option
 * alias_entry_cache_negative MTA Option
 * alias_entry_cache_size MTA Option
 * alias_entry_cache_timeout MTA Option
 * aliasdetourhost_null_optin MTA Option
 * defer_group_processing MTA Option
 * group_dn_template MTA Option
 * ldap_default_attr MTA Option
 * delivery_options MTA Option
 * ldap_filter_reference MTA Option
 * ldap_group_object_classes MTA Option
 * ldap_hoh_filter MTA Option
 * ldap_hoh_owner MTA Option
 * Head of household Sieve filters
 * ldap_mail_aliases MTA Option
 * ldap_mail_reverses MTA Option
 * ldap_parental_controls MTA Option
 * ldap_permid Option
 * ldap_uid_invalid_chars MTA Option
 * ldap_user_object_classes MTA Option
 * ldap_user_root MTA Option
 * max_alias_levels MTA Option
 * max_urls MTA Option
 * reverse_address_cache_size MTA Option
 * reverse_address_cache_timeout MTA Option
 * LDAP lookup cache MTA options
 * reverse_url MTA Option
 * Direct LDAP attribute name MTA options
 * MTA options
 * Direct LDAP MTA options