# ----- Main settings -----
acl_smtp_rcpt = accept
-local_interfaces = <; 127.0.0.1.PORT_D ; [127.0.0.1]:PORT_D2 ; HOSTIPV4
+local_interfaces = <; 127.0.0.1.PORT_D ; [127.0.0.1]:PORT_D2 ; HOSTIPV4 ; 127.0.0.1.PORT_D4
log_selector = +incoming_interface+incoming_port
queue_only
queue_run_in_order
local_delivery:
driver = appendfile
file = DIR/test-mail/$local_part
+ create_file = DIR/test-mail
user = CALLER
headers_add = interface-port: $interface_port\n\
received-port: $received_port