plugin=attach is not implemented.
http://pocketstudio.jp/linux/?DRAC%252F%25A5%25E1%25A1%25BC%25A5%25EB%25A5%25B5%25A1%25BC%25A5%25D0%25C4%25B4%25C0%25B0%2520%2528Mail%2520Server%2520Configuration%2529
[
ȥå
] [
Խ
|
ʬ
|
Хåå
|
ź
|
] [
|
|
ñ측
|
ǽ
|
إ
]
plugin=attach is not implemented.