ian douglas wrote:
> Right now I have MailScanner configured to delete high scoring spam so
> it doesn't end up in my user's mailbox, but what about the 'bounce'
> option?
> 
> I'd *really* like to find a way to spoof a 550 error or a 'user
> unknown' error

What's to spoof?  Unless you've got a *very* weird email setup, there's
little excuse these days for not rejecting nonexistent non-spamtrap
users up front.

Most content filters that plug into MTAs also have some sort of option
to conditionally reject the message after the DATA phase (thus keeping
it out of your mailboxes, and on someone else's mail queue).

> that bounces back, just in case the people on the other end ARE
> cleaning their lists.

For legit email that "just" had a mistyped destination, a complete new
message indicating the mistake is perfectly OK, and probably clearer to
the sender as well.  It's effectively identical to a proper
inbound-SMTP-level 550 rejection.

For spam, a complete new message is a waste of your time, and your
server's bandwidth, because that bounce message is going to sit in your
mail queue for days, and never reach the spammer anyway.

> I know, I know, a long shot, I still get Email for non-existant Email
> addresses, and starting now to get Email to truncated Email accounts
> ... I used to have [EMAIL PROTECTED] and [EMAIL PROTECTED] as addresses and
> now I'm getting spam at "[EMAIL PROTECTED]" and "[EMAIL PROTECTED]" /shrug

*blink*  That's a new one.

> Anyhow know a good way to spoof an error message like that? Open to
> any suggestions ;o)

If you mean "a widget that runs on the email client and sends fake
postmaster messages", please don't.  As noted, it's basically a waste of
time and server resources.

If you mean "550 users that don't exist immediately after the 'RCPT
TO:[EMAIL PROTECTED]' SMTP command", check your MTA's documentation.

If you want to do something a little more complex, ie 550 mail *from* a
bad user to a subset of your legit accounts, then you'll have to dig
into the documentation for your favourite milter, or whatever software
is available as a plugin mail processor for your favourite MTA.

-kgd
-- 
<erno> hm. I've lost a machine.. literally _lost_. it responds to
ping, it works completely, I just can't figure out where in my
apartment it is.


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