モール運営とは直接関係ないのですが、
本日、16時45分から大量のエラーメッセージが届くようになりました。
もしわかりましたら対処法をお教えください。

メールはODNを使っています。

差出人はすべて　Mail Administrator <**********@***.ne.jp>

エラーメールは数種類あります。

件名：Mail System Error - Returned Mai

--------------------------------------------------------------
1.
This Message was undeliverable due to the following reason:

Your message was not delivered because the return address was refused.

The return address was "<【1】*******@***.***.ne.jp>"

Please reply to <Postmaster@odn.ne.jp>
if you feel this message to be in error.
--------------------------------------------------------------
2.
This Message was undeliverable due to the following reason:

Each of the following recipients was rejected by a remote mail server.
The reasons given by the server are included to help you determine why
each recipient was rejected.

Recipient: <【2】********.********@*******.com>
Reason: Requested action not taken: mailbox unavailable


Please reply to <**********@***.ne.jp>
if you feel this message to be in error.

-------------------------------------------------------------
3.
This Message was undeliverable due to the following reason:

Your message was not delivered because the destination computer refused
to accept it (the error message is reproduced below). This type of error
is usually due to a mis-configured account or mail delivery system on the
destination computer; however, it could be caused by your message since
some mail systems refuse messages with invalid header information, or if
they are too large.

Your message was rejected by **.**.****.*******.co.uk for the following reason:

Message rejected for policy reasons (3.2.2.1) - Please report any problems to BT via the **********@**********.com mailbox and include your sending ip address with an example header of your email

The following recipients did not receive this message:

<【3】*********@**********.com>

Please reply to <**********@odn.ne.jp>
if you feel this message to be in error.
--------------------------------------------------------------

などといくつかあります。

もう2000通近く来ています。

プロバイダーにも問い合わせようと思いますが、このフォーラムを思い出し
質問してみました。

よろしくお願いいたします。