OK guys... this certainly qualifies as "most broken SMTP implementation ever".
Will the protocol police please send out a squad car to pick up the suspects?
(at least now we know how they intend to only do this for HTTP. Blargh).
--- Begin Message ---
Patrick W. Gilmore wrote:
-- On Tuesday, September 16, 2003 00:56 +0200
-- Niels Bakker <niels=nanog(_at_)bakker(_dot_)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(_at_)baaaaaaaaaaaaaaaaaaaaaaaaaaar(_dot_)net
250 OK
mail from: fooooo(_at_)baaaaaaaaaaarrrrrrrrrrrr(_dot_)net
550 User domain does not exist.
mail from: patrick(_at_)ianai(_dot_)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
--- End Message ---
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