From: Satish Talim <satish.talim@...>
Date: 2006-07-30T16:23:34+09:00
Subject: TCPSocket and RFC 821

I wanted to send an email from my desktop using a simple Ruby program.
I installed 1st SMTP Server
(http://www.emailarms.com/products/1st_smtp.html)  - an easy to use
SMTP mail relay server. It is used for relaying your email messages to
its destinations quickly and easily. For this server, I need to use
localhost and port 25 on my PC.

Then the program I wrote was (based on RFC 821) -

require 'socket'
t = TCPSocket.new('localhost', 25)
puts t.gets
t.puts 'HELO Welcome from Ruby'
puts t.gets
t.puts 'MAIL FROM:<abc@gmail.com>'
puts t.gets
t.puts 'RCPT TO:<abc@gmail.com>'
puts t.gets
t.puts 'DATA'
puts t.gets
t.puts 'Test Email from Ruby'
t.puts "\r\n.\r\n"
puts t.gets
t.puts 'QUIT'
puts t.gets
t.close

However, while running the program, I get an error as follows:

220 Welcome to the 1st SMTP Server

250 Hello Welcome from Ruby

250 abc@gmail.com Address Okay

250 abc@gmail.com Address Okay

354 Start mail input; end with <CRLF>.<CRLF>

nil
email.rb:15:in `write': Invalid argument (Errno::EINVAL)
	from email.rb:15:in `puts'
	from email.rb:15
>Exit code: 1

I am unable to figure out what the problem is. All help appreciated.