On Tuesday, January 6, 2004, 10:49:10, Andrew P. Kaplan wrote:
> This question has always been in the back of my mind. I notice a ton of mail
> coming from <>. How can this be legitimate mail.
>From RFC 2821 Simple Mail Transfer Protocol
6.1 Reliable Delivery and Replies by Email
...
If there is a delivery failure after acceptance of a message, the
receiver-SMTP MUST formulate and mail a notification message. This
notification MUST be sent using a null ("<>") reverse path in the
envelope. ...
>From RFC 2505 Anti-Spam Recommendations
2.6.1. "MAIL From: <>"
The MTA MUST NOT refuse to receive "MAIL From: <>".
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Rod Dorman late for the pebbles to vote." � Ambassador Kosh
