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Full Discussion: Perl telnet
Top Forums Programming Perl telnet Post 302851995 by jim mcnamara on Tuesday 10th of September 2013 08:52:06 AM
Old 09-10-2013
The code is correct it's a perldoc example. Make sure the $host variable is assigned correctly.

In windows, try this :Get into cmd

try using the default port
Code:
telnet  hostname 23

See if you can connect. And then login. If you fail, find out what port you should use. Some flavors of telnet require ports like 992 for example, not the default 23.

After it works manually, transfer that information into your code. The perldoc article shows how to set port and other options.
 

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mconnect(1)							   User Commands						       mconnect(1)

NAME
mconnect - connect to SMTP mail server socket SYNOPSIS
mconnect [-p port] [-r] [hostname] DESCRIPTION
The mconnect utility opens a connection to the mail server on a given host, so that it can be tested independently of all other mail soft- ware. If no host is given, the connection is made to the local host. Servers expect to speak the Simple Mail Transfer Protocol (SMTP) on this connection. Exit by typing the quit command. Typing EOF sends an end of file to the server. An interrupt closes the connection immedi- ately and exits. OPTIONS
The following options are supported: -p port Specify the port number instead of the default SMTP port (number 25) as the next argument. -r "Raw" mode: disable the default line buffering and input handling. This produces an effect similar to telnet(1) to port number 25. OPERANDS
The following operand is supported: hostname The name of a given host. USAGE
The mconnect command is IPv6-enabled. See ip6(7P). FILES
/etc/mail/sendmail.hf help file for SMTP commands ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
telnet(1), sendmail(1M), attributes(5), ip6(7P) Postel, Jonathan B., RFC 821, Simple Mail Transfer Protocol, Information Sciences Institute, University of Southern California, August 1982. SunOS 5.10 9 Nov 1999 mconnect(1)
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