Hi there,
always distrusting that my brain remembers documentation correctly, i
checked the meaning of ``unknown_client_reject_code''.
http://www.postfix.org/postconf.5.html#unknown_client_reject_code
Incidentally, i also clicked on the presented link (in html source):
<a href="http://tools.ietf.org/html/rfc5321";>RFC 5321</a>
And had to note that it is a so called "dead link".
It seems, the webmaster of tools.ietf.org has decided to not provide
meaningful service via HTTP on port 80 anymore, but only via HTTPS on
port 443.
I therefore suggest replacing any and all occurrences of
"http://tools.ietf.org";
with
"https://tools.ietf.org";
in the html documentation.
with best regards,
Max
