ietf-822
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Re: [0.0.0.0]

2005-02-28 06:22:13

nice try. but in practice if you try to connect to 0.0.0.0 you'll get
an error, which is what we want to happen.

That depends on your OS:

mine$ uname -a
SunOS mine 5.9 Generic_117171-12 sun4u sparc SUNW,Ultra-2
mine$ telnet 0.0.0.0 25
Trying 0.0.0.0...
Connected to 0.0.0.0.
Escape character is '^]'.
220 mine ESMTP Sendmail 8.13.1/8.13.1; Mon, 28 Feb 2005 05:48:09 +0100 (MET)

windlord:~> uname -a
Linux windlord 2.4.26 #1 Tue Apr 20 16:17:15 PDT 2004 i686 GNU/Linux
windlord:~> telnet 0.0.0.0 smtp
Trying 0.0.0.0...
Connected to 0.0.0.0 (0.0.0.0).
Escape character is '^]'.
220 windlord.stanford.edu ESMTP
quit
221 windlord.stanford.edu
Connection closed by foreign host.

sigh. I stand corrected. (I thought I had tried these cases, but must have tried something else.)