Ldap default domain MTA option

Direct LDAP attribute interpretation options:  (string)
The  MTA option specifies the domain name that is recognized and interpreted as the  default domain by the MTA. In legacy configuration, this option, if set, overrides the configutil parameter. In Unified Configuration, this option, if set, overrides (for MTA purposes) the base level  option -- but it would be more normal/preferable to only set   so that all components of Messaging Server have a consistent choice of default domain.

In particular, in    substitutions, the canonical domain name for the domain in which a user is located is compared against the   value. If they match, then substitutions such as    will not insert a domain name; that is,   is the domain name for which (in typical configurations) usernames will be left "bare" when constructing a mailbox.

The  also specifies the domain name that preferentially will be  returned for  Sieve environment " " tests;  if it is not set, then the MTA falls back to the     if set, or otherwise the  official hostname  of the L channel.

See also:
 * Direct LDAP attribute interpretation MTA options
 * delivery_options MTA Option
 * received_domain MTA Option
 * Configutil override MTA options
 * LDAP URL substitution sequences
 * Sieve environment extension
 * official_host_name Option
 * defaultdomain Option