Ldap local host MTA option

Direct LDAP attribute interpretation MTA options:  (string)
The  MTA  option specifies the local hostname  (official host name for the "l" channel) for LDAP lookup result  interpretation purposes. If not set, it defaults to the value of the   Base option. If set, this option overrides the   Base option (in legacy configuration, the   parameter). Normally  and    should be set to match: the distinction is that the   value affects interpretation by the MTA of LDAP lookup results (as well as during initial installation/configuration controlling  what hostname is generated for the "l" channel    and  combined with standard channel prefixes to generate an appropriate   value  for the other standard channels), whereas   controls MTA address interpretation and processing in other contexts such as rewrite rules and  SMTP server hostname defaults. But since initial installation/configuration normally sets the   based on the   Base option value, they normally indeed "match".

Note that the  substitution value comes from   (which if not set explicitly, defaults to the value of the   Base option, or   in legacy configuration).

See also:
 * hostname Option
 * official_host_name Option
 * Local channel
 * Direct LDAP attribute interpretation MTA options
 * Configutil override MTA options