telnet to port 25 from XP

  • Thread starter Thread starter Andy Fish
  • Start date Start date
A

Andy Fish

Hi,

I have found that using the built in a windows XP telnet client, I can type

telnet <anyhost> 25

and it appears to connect (though I get no response), even if the host is
just a made-up IP address. Using a different port number or doing it from
windows 2000 gives the expected result:

Connecting To <host>.. Could not open connection to the host, on port
<port>: Connect failed

Why is the telnet client or tcp/ip stack treating port 25 differently?

Andy
 
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