On Tue, 11 Jun 2002 01:22:25 +0200 gianpaolo racca <[EMAIL PROTECTED]>
wrote:

> On Saturday 01 June 2002 19:58, J. Craig Woods wrote:
> > WRONG AGAIN! The mail server, smtp.mandrax.org is not, repeat *NOT*,
> > doing a reverse dns lookup on ip addresses (please see my *many* posts
> > on this issue).
> 
> So what's the meaning of this message?
> 
> <[EMAIL PROTECTED]>: host smtp.mandrax.org[63.209.80.243] said:
> 450
>     Client host rejected: cannot find your hostname, [111.222.333.444]

Simple...  your hostname is not known via DNS:
$ host simpson.preciso.net
Host simpson.preciso.net not found: 3(NXDOMAIN)

> my public IP has obviously been hidden

Why do people even bother...?  headers rarely hide it...
> Received: from simpson.preciso.net (217.133.237.104)

Duh!  :^)

OK... so your next question will likely be: b-b-b-b-but, my IP is right
there!??

Yup; but *this* message was forwarded by mail-8.tiscalinet.it
[195.130.225.154] which doesn't have a "reject_unknown_client" rule (see
http://www.postfix.org/uce.html#smtpd_client_restrictions)... so
mail-8.tiscalinet.it got the message from 217.133.237.104 which identified
itself via EHLO as simpson.preciso.net and never bothered to verify it... 
when the msg was forwarded on to mandrake, they verified
mail-8.tiscalinet.it which...  tada!

$ host mail-8.tiscalinet.it
mail-8.tiscalinet.it has address 195.130.225.154

returns the same IP it just connected to mandrake with...

OK Craig, back into your court...  LOL

Pierre

Want to buy your Pack or Services from MandrakeSoft? 
Go to http://www.mandrakestore.com

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