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A user is complaining about some emails bounced back (Delivery failed notification) even though he did not receive the emails.

From postmaster

To mailing list that my user is member of.

Subject: Delivery Notification: Delivery has failed

Message-id: <000a01c6f111$dd41e8a0$6922ec3a@b2l4ld0s5id01uy>

Date: Mon, 16 Oct 2006 19:57:25 +0900

From: "Inc." <dzvsqiwk@unitedchem.com>

To: internal_mailing_list

Subject: cash stock and

Your message cannot be delivered to the following recipients:

Recipient address: internal_mailing_list

Original address: internal_mailing_list

Reason: unknown or illegal alias

The original email originates from a spammer and is sent to the internal mailing list.

How to avoid these bounced back messages?

Thanks,

[854 byte] By [Linda_B] at [2007-11-26 10:52:52]

«« Application is dropping core when there is an exception
»» how to mount an USB disk

# 1

Since the message originates outside your system, and includes a forged return address, there is little you can do about the message itself. This is so common, it has a name, "joe-job". The message is sent to other systems, and since it's sent to addresses that don't exist, the DSN generated by these external systems "blows back" to your system.

Now, if "internal_mailing_list" is one of your lists, and you don't have a "msgrpAllowedSender" attribute on the list, you have indeed exposed yourself to this.

jay_plesset at 2007-7-7 3:05:48 >

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