/tt></a> when the communications socket is created. 
</ul>

<p class=return> 
If  successful, the function returns 1. Otherwise, the function returns
<b><tt>nil</tt></b> followed by an error message.
</p>

<p class=note>
Note: SMTP servers can be very picky with the format of e-mail
addresses. To be safe, use only addresses of the form
"<tt>&lt;fulano@example.com&gt;</tt>" in the <tt>from</tt> and
<tt>rcpt</tt> arguments to the <tt>send</tt> function. In headers, e-mail
addresses can take whatever form you 