nanog mailing list archives

Re: What *are* they smoking?


From: "Patrick W. Gilmore" <patrick () ianai net>
Date: Mon, 15 Sep 2003 19:34:36 -0400


-- 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.

--
TTFN,
patrick


Current thread: