local_delivery:
driver = appendfile
file = DIR/test-mail/$local_part
+ create_file = DIR/test-mail
user = CALLER
send_to_server1:
allow_localhost
hosts = ${if eq {$local_part}{user4} {127.0.0.1} {<; ::1}}
port = PORT_D
+ hosts_try_fastopen = :
interface = <; ::1 ; HOSTIPV4
send_to_server2:
allow_localhost
hosts = ${if eq {$local_part}{user4} {127.0.0.1} {<; ::1}}
port = PORT_D
+ hosts_try_fastopen = :
interface = <; HOSTIPV6 ; HOSTIPV4
send_to_server3:
allow_localhost
hosts = ${if eq {$local_part}{user4} {127.0.0.1} {<; ::1}}
port = PORT_D
+ hosts_try_fastopen = :
interface = <; ${if eq{0}{1}{HOSTIPV6}fail}
send_to_server4:
allow_localhost
hosts = ${if eq {$local_part}{user4} {127.0.0.1} {<; ::1}}
port = PORT_D
+ hosts_try_fastopen = :
interface = <; ${if eq{0}{1}{HOSTIPV6}{ }}
send_to_server5:
allow_localhost
hosts = ${if eq {$local_part}{user4} {127.0.0.1} {<; ::1}}
port = PORT_D
+ hosts_try_fastopen = :
interface = <; ${if
send_to_server:
allow_localhost
hosts = ${if eq {$local_part}{user4} {127.0.0.1} {<; ::1}}
port = PORT_D
+ hosts_try_fastopen = :
interface = ${expand:$h_interface:}