Re: Postfix is spammer-friendly by default on potato and woody
> So, Postfix appears to be an open relay to the stupid mail-abuse.org
> test, because the test does not confirm the relay when it receives its
> message back, but right after it gives it away.
This is also the case for Exim, I believe, with a standard
configuration (percent_hack_domains commented out):
$ telnet mail.math-hat.com 25
Trying 216.254.75.142...
Connected to zukerman-1.dsl.speakeasy.net.
Escape character is '^]'.
220 zukerman-1.dsl.speakeasy.net ESMTP Exim 3.12 #1 Thu, 02 Nov 2000 06:53:53 -0500
HELO foo
250 zukerman-1.dsl.speakeasy.net Hello foo [x.x.x.x]
MAIL FROM: <zukerman@math-hat.com>
250 <zukerman@math-hat.com> is syntactically correct
RCPT TO: <foo%bar.com@math-hat.com>
250 <foo%bar.com@math-hat.com> is syntactically correct
DATA
354 Enter message, ending with "." on a line by itself
testing...
.
250 OK id=13rIxD-0002aC-00
quit
>From /var/log/exim/mainlog:
2000-11-02 06:54:50 13rIxD-0002aC-00 <= zukerman@math-hat.com H=(localhost) [x.x.x.x] P=smtp S=308
2000-11-02 06:54:50 13rIxD-0002aC-00 ** foo%bar.com@math-hat.com: unknown local-part "foo%bar.com" in domain "math-hat.com"
2000-11-02 06:54:50 13rIxG-0002aI-00 <= <> R=13rIxD-0002aC-00 U=mail P=local S=1120
2000-11-02 06:54:50 13rIxD-0002aC-00 Error message sent to zukerman@math-hat.com
2000-11-02 06:54:50 13rIxD-0002aC-00 Completed
-itai
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