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From: Lloyd Zusman <ljz@asfast.com>
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Subject: Re: smtp authentication (sendmail relay)
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Colin Walters <walters@cis.ohio-state.edu> writes:

> Kai.Grossjohann@CS.Uni-Dortmund.DE (Kai Großjohann) writes:
> 
> > How does the mail get sent, then?  Sending a mail involves
> > connecting to port 25, and whether or not that connection is via
> > telnet is immaterial.  I think.
> 
> Maybe it drops anything that tries telnet options negotiation?

Well, I was able to make a normal telnet connection to that host.

And besides, when you use telnet to connect a port other than 23 (the
standard telnet port), no telnet options negotiation is done.  As
the telnet man page states:

  ...  When connecting to a non-standard port, telnet omits any
  automatic initiation of TELNET options.  ...

-- 
 Lloyd Zusman
 ljz@asfast.com