Alias importance, alias precedence, alias priority, and alias sensitivity alias options

Alias options:,  ,   ,  and
The,  ,  , and   alias options are used to generate respective header lines; the   specified is inserted on the respective header line. Alias file/alias database analogues exist; see the ,  ,  , and   alias file named parameters.

Note that the more general   alias option  -- in legacy configuration, the alias file/alias database   named  parameter --  provides an alternate way to add these and other header lines. Or for aliases defined in LDAP, see the  MTA option.

See also:
 * Alias options
 * Alias file named parameters
 * alias_header_addition Option
 * ldap_add_header MTA Option