At 09:48 AM 12/10/2005, List Mail User wrote:
>> Received: from unknown (HELO 207.96.139.179) (unknown)
>> by unknown with SMTP; 9 Dec 2005 23:37:06 -0000
>
>That's a pretty scary Received: line. At least two of those unknown's
should be
>known. At absolute minimum the "by" clause should be known... eek.
>
You've obviously never seen what kind of mess an "out-of-the-box"
qmail can do to *destroy* mail headers:
Received: from unknown (HELO lh) (unknown)
by unknown with SMTP; 4 Dec 2005 04:01:40 -0000
...
That really makes me wonder if DJB is intentionally trying to make plain
qmail an unusable POS so that nobody will be able to use it without
patching. Or is it a purely accidental side effect?
Any MTA that can ever fail to report the local hostname in the "by" clause
scares me. Ditto for the source IP delivering mail (in the case of SMTP).
It should at least be really hard to misconfigure an MTA to the point it
does that. Like hacking the source code hard, or at least mucking around
with several options the manpage or conf file warn you not to touch.
