Alias database

The MTA&#x27;s alias database, seldom used nowadays, provided an additional location for storing large numbers of aliases, supplementing the the alias options (Unified Configuration) or alias file (legacy configuration). Nowadays, with "Direct LDAP" configuration, the majority of aliases are normally  stored in LDAP.

The  MTA option controls whether or not the MTA makes use of the alias database. The default is 1, so the mere presence of the alias database activates the MTA&#x27;s use of it as a source of aliases.

See also:
 * Using another alias source and the alias database
 * Alias database format
 * imta_alias_database MTA Option
 * use_alias_database MTA Option
 * alias_database_url MTA Option
 * alias_domains MTA Option
 * alias_magic MTA Option
 * aliasmagic Option
 * max_alias_levels MTA Option
 * ldap_use_async MTA Option
 * Aliases in LDAP
 * Alias file
 * Aliases