From what I can see, your ISP is automaticly forwarding all unknown e-mail
addresses to your "user1" account (whatever that might really be.).. Ask
them to stop this behaviour.. It is there that the mail should be bounced
if the user is unknown.
____________________________________________
Feb 7 9:01pm
They hang the man and flog the woman
That steal the goose from off the common,
But let the greater villain loose
That steals the common from the goose.
--English folk poem, circa 1764
On Fri, 7 Feb 2003, K. Richard Pixley wrote:
I'm having a spam problem. One day recently, I was sent several
thousand spam messages all to different email addresses in my domain.
Since all were unknown users, all were forwarded to me personally.
I wish that I could mimic the traditional sendmail behavior. Mail to
unknownuser(_at_)mydomain(_dot_)com should be bounced back to sender.
Here's my tiny .fetchmailrc...
poll best.noir.com with proto IMAP envelope Delivered-To
localdomains noir.com
user "user1" there with password "something"
is rich ice trinity root here
antispam 571 550 501 554
As far as I can tell, there is no difference between mail received and
forwarded for "rich" and mail received and forwarded for "hksS9hQ3San".
Other than potential for rewrite, (rich1=rich2), is there any?
When the number of "bad" addresses is small and well known, I can
explicitly alias those addresses into bounces using sendmail, (awkward,
but feasible). However, when the spammer is apparently automatically
generating the addresses, I appear to be stuck receiving all of them if
I'm using fetchmail.
I'd like to point out two key bits. First, my isp does include a
"delivered-to" header consistently and reliably. Second, sendmail
really does know who is and isn't a valid address in my domain.
Fetchmail's ability to forward all such unknown addresses to me is
useful for debugging, but seems misguided as an attempt to second guess
sendmail.
Suggestions?
--rich
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