From: Kero <kero@...>
Date: 2005-12-29T21:07:55+09:00
Subject: Re: Need Help Using Net::SMTP

On 2005-12-29, Dan Diebolt <dandiebolt@yahoo.com> wrote:
> --0-1020623145-1135855120=:46005
> Content-Type: text/plain; charset=iso-8859-1
> Content-Transfer-Encoding: quoted-printable
>
>>You may be getting caught by a spam filter.
>  
>   I can post email using postie so I can't see a problem with the basic c
> redentials being sent. There must be some configuration of Net::SMTP that
>  will allow me to email from Ruby. Anyone have a clue what to do?

$ ri send_message
------------------------------------------------- Net::SMTP#send_message
     send_message( msgstr, from_addr, *to_addrs )
------------------------------------------------------------------------
     Sends msgstr as a message. Single CR ("\r") and LF ("\n") found in 
     the msgstr, are converted into the CR LF pair. You cannot send a 
     binary message with this method. msgstr should include both the 
     message headers and body.

"...both the message headers and the body" does not seem to be covered by a
string like "hello", in other words you are complying to SMTP but not to RFC
822. Lacking a From/Reply-To address you do not receive the Delivery Failure
message, I suppose. An (incomplete!) snippet from what I use:

    header = [
      "To: #{to.join(', ')}",
      "Subject: #{subject}",
      "Date: #{Time.now.rfc822}",
      "From: Arena II <#{ArenaMail}>"
    ]
    Net::SMTP.start("localhost", 25, SiteDNS) { |smtp|
      smtp.sendmail(header.join("\n")+"\n\n"+msg, ArenaMail, rcpts)
    }

(in which I should use \r\n but as the docs say, it does not matter)

Hth,
Kero.

PS: there are higher level mail libraries for Ruby, iirc.