╰─[:(] % sudo exim -brw fp42@restaurant.hitch.fict.example
  sender: fp42@restaurant.hitch.fict.example
    from: fp42@restaurant.hitch.fict.example
      to: fp42@restaurant.hitch.fict.example
      cc: fp42@restaurant.hitch.fict.example
     bcc: fp42@restaurant.hitch.fict.example
reply-to: fp42@restaurant.hitch.fict.example
env-from: fp42@restaurant.hitch.fict.example
  env-to: fp42@restaurant.hitch.fict.example
╭─[~]─[tom@pluto]─[0]─[8901]
╰─[:)] % cat /etc/exim4/conf.d/rewrite/00_exim4-config_header

######################################################################
#                      REWRITE CONFIGURATION                         #
######################################################################

begin rewrite
*@*.hitch.fict.example  $1@hitch.fict.example