[62079] in North American Network Operators' Group
Re: What *are* they smoking?
daemon@ATHENA.MIT.EDU (netmask)
Mon Sep 15 21:23:49 2003
Date: Mon, 15 Sep 2003 20:17:43 -0500 (CDT)
From: netmask <netmask@enZotech.net>
To: Kevin Loch <kloch@gurunet.net>
Cc: nanog@merit.edu
In-Reply-To: <48c35a4a.5a4a48c3@mail1.gurunet.net>
Errors-To: owner-nanog-outgoing@merit.edu
> ----- Original Message -----
> From: "Patrick W. Gilmore" <patrick@ianai.net>
> Date: Monday, September 15, 2003 7:34 pm
> Subject: Re: What *are* they smoking?
>
> >
> > No, it accepts if the from domain exists - but only if it *REALLY*
> > exists.
>
> Anyone want to guess what happens to all those from addresses it captures?
No doubt.. It's unfortunate that they are running a daemon on port 25 on that
box.. and that it actually lets you helo and mail from.. and not until you
get to rcpt to does it reject.. unless you use a domain its now got cached
in which case it accepts the to: and closes at data. (So, if you rcpt twice,
it'll accept it.. cuz like everyone else, its own dns server resolves
everything)
[netmask@devnull netmask]$ telnet www.oisdufoisdufoisuf.com 25
Trying 64.94.110.11...
Connected to www.oisdufoisdufoisuf.com.
220 snubby3-wceast Snubby Mail Rejector Daemon v1.3 ready
helo ishouldntresolvebutthankstoyouido.com
250 OK
mail from: <ihateverisign@ishouldntresolvebutthankstoyouido.com>
250 OK
rcpt to: <anyone@lkajsdflkjasdflkjasdf.com>
550 User domain does not exist.
rcpt to: <anyone@lkajsdflkjasdflkjasdf.com>
250 OK
data
221 snubby3-wceast Snubby Mail Rejector Daemon v1.3 closing transmission
channel
