local_delivery:
driver = appendfile
file = DIR/test-mail/$local_part
+ create_file = DIR/test-mail
user = CALLER
quota = ${if eq{$local_part}{userx}{3}{10000}}
driver = appendfile
retry_use_local_part = false
file = DIR/test-mail/$local_part
+ create_file = DIR/test-mail
user = CALLER
quota = 3
current_directory = /