On Thu, 2 Mar 2000, James Raftery wrote:
> Each additional failure adds a few bytes. Not exactly earth-shattering :)
Let's assume only a single bounce message is generated.
It consists of three parts:
1. headers and some text
2. the list of address and error messages
3. the copy of the original message
Let's look at 2:
> <[EMAIL PROTECTED]>:
> Sorry, no mailbox here by that name. (#5.1.1)
The error message is quite long. In fact, it is probably longer than most
email addresses, even with additional "rcpt to:". If you send an empty
message to many bogus recipients (limited only by the amount of virtual
memory available to qmail-remote), you can get > 100% amplification easily
(compared to your own network traffic).
--Pavel Kankovsky aka Peak [ Boycott Microsoft--http://www.vcnet.com/bms ]
"Resistance is futile. Open your source code and prepare for assimilation."
