Mail Bombか？（怒）

Postfix

Subject: Undelivered Mail Returned to Sender

This is the Postfix program at host hogehoge.com.

I'm sorry to have to inform you that your message could not be
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to 

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

			The Postfix program

Subject: Undeliverable: ttytyvlt

Your message

  To:      hogehoge@hogehoge.com
  Subject: ttytyvlt
  Sent:    Sat, 25 Aug 2007 02:39:17 -0400

did not reach the following recipient(s):

Subject: Delivery Notification for 

This is a delivery status notification, automatically generated by MTA hogehoge.com on Sat, 25 Aug 2007 08:05:52  0100
Regarding recipient(s) : hogehoge@hogehoge.com
Delivery status : Failed. Message could not be delivered to the domain - hogehoge.com. Failed to accept the recipients.
MTA Response :550
The original message headers are included as attachment.

Subject: failure notice

Hi. This is the qmail-send program at hogehoge.com.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

:
Sorry, no mailbox here by that name. (#5.1.1)

Subject:  Undeliverable Mail

Unknown user: hogehoge@hogehoge.com

RCPT TO generated following response:
550 unknown user 

Subject: Mail delivery failed: returning message to sender

This message was created automatically by mail delivery software (Exim).

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  hogehoge@hogehoge.com
    SMTP error from remote mailer after RCPT TO::
    host hogehoge.com [***.***.***.***]:
    550 hogehoge@hogehoge.com...Due to extended inactivity new mail is not currently being accepted for this mailbox.

Subject: **Message you sent blocked by our bulk email filter**

Your message to: hogehoge@hogehoge.com
was blocked by our Spam Firewall. The email you sent with the following subject has NOT BEEN DELIVERED:

Subject: tung-hu