Re: 'bounce' messages with evolution?

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On 22 Nov 2002 16:39:38 -0800, Christopher Keller wrote:

> On Fri, 2002-11-22 at 10:49, Michael Schwendt wrote:
> 
> > Assuming the mail user agent had such a feature, that wouldn't be
> > useful because your mail exchange should not have accepted the
> > message at all. 
> 
>  It does seem likely that the redirect feature was what they meant. 
> 
> But, what if you had atrue bounce feature. If you were able to bounce
> an email message as if a mailbox didn't exist, the sender (if done
> properly) would never know it was accepted by your mail server. You'd
> have to munge the mail headers which is probably a no no....

The final mail server in a chain of relays usually would answer with
an error like "no such user" or "unknown user" or something similar
and would reject the incoming message. If the mail account existed
and if the sender connected directly to the recipient's mail server,
he would first get something like "message accepted for delivery"
and later the manually created mailer-daemon message. Surely that
would work with a human-being getting and reading that mailer-daemon
message. However, I have doubts that it would work with spammers,
since they don't evaluate mailer-daemon replies (if they did, they
would use valid e-mail addresses). And even if an address collector
would erase a bouncing address from his commercial list, that would
not remove your address from the many other source (e.g. the web or
mailing-list archives) and other bulk e-mail lists which are sold or
used/maintained by bulk e-mail service providers.

The only way to fight SPAM/UCE is to block it on its way into the
mail transport system as early as possible.

- -- 
I hate SPAM from Taiwan, Korea, and China. They manage to kill my
Yahoo Mail account easily. 123 junk messages in less than four days
(50 Inbox, 73 Bulk, average message size 50 KiB).
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