[62100] in North American Network Operators' Group
Re: What *are* they smoking?
daemon@ATHENA.MIT.EDU (Matthew Sullivan)
Tue Sep 16 00:32:55 2003
Date: Tue, 16 Sep 2003 14:31:53 +1000
From: Matthew Sullivan <matthew@sorbs.net>
To: "Patrick W. Gilmore" <patrick@ianai.net>
Cc: nanog@merit.edu
In-Reply-To: <2147483647.1063654476@[172.30.102.254]>
Errors-To: owner-nanog-outgoing@merit.edu
Patrick W. Gilmore wrote:
>
> -- On Tuesday, September 16, 2003 00:56 +0200
> -- Niels Bakker <niels=nanog@bakker.net> supposedly wrote:
>
>> A wildcard A record in the net TLD.
>>
>> $ host does.really-not-exist.net
>> does.really-not-exist.net has address 64.94.110.11
>>
>> $ host 64.94.110.11
>> 11.110.94.64.IN-ADDR.ARPA domain name pointer
>> sitefinder-idn.verisign.com
>>
>> It even responds on port 25 (says 550 on every RCPT TO). Gah.
>
>
> No, it accepts if the from domain exists - but only if it *REALLY*
> exists.
>
> [...]
> rcpt to: fooo@baaaaaaaaaaaaaaaaaaaaaaaaaaar.net
> 250 OK
> mail from: fooooo@baaaaaaaaaaarrrrrrrrrrrr.net
> 550 User domain does not exist.
> mail from: patrick@ianai.net
> 250 OK
>
> Nice that their spam filters still work. :(
>
> And I love the 221 close message:
>
> data
> 221 snubby1-wcwest Snubby Mail Rejector Daemon v1.3 closing
> transmission channel
> Connection closed by foreign host.
>
Worse than that - it's a fixed sequence of responses...
$ telnet akdjflasdf.com 25
Trying 64.94.110.11...
Connected to akdjflasdf.com.
Escape character is '^]'.
220 snubby4-wceast Snubby Mail Rejector Daemon v1.3 ready
sdfg
250 OK
sdfgsdfgsdfgsdf
250 OK
sdfgdfgaegqaergqaergvav
550 User domain does not exist.
asdfgasdfgasdf
250 OK
sdfasdfadsfasdf
221 snubby4-wceast Snubby Mail Rejector Daemon v1.3 closing transmission
channel
Connection closed by foreign host.
/ Mat
