Net::SMTP demo for some solaris people... yonder ...

mailx.pl

    my $smtp = Net::SMTP->new("mail.gateway.company.com",
        Hello=>"sending-hostname.company.com", Debug=>1)
            or croak $!;

    # This is the SMTP Return path.  It's the actual return path of the
    # mail and should be real.  It's used in the accept/deny decision
    # (sometimes) and populates the return-path: header in the email.  It's
    # the MAIL FROM SMTP command.
    $smtp->mail('real-sender@company.com');

    # This is is the RCPT part of the SMTP session.  The recipients of the
    # mail are decided from this command.  The body of the message (e.g.,
    # the To: header below) is not used to decide recipients.  That's part
    # of the story you tell the recipient.  All TO:, BCC: and CC:
    # recipients must be listed here.  the only difference between a BCC
    # and a CC is that the BCC won't appear in the body of the message
    # below.
    $smtp->to("recipient1@company.com", "recp2@company.com", "r3@company.com");

    # send SMTP command to start start the body of the message
    $smtp->data;
    
    # The rest of this can be as fictional as you like.  The from: and to:
    # headers are used by mail clients to show the sender, but the mail
    # servers don't normally care about them at all.
    $smtp->datasend("From: \"My Real Name\" <realname@company.com>\n");
    $smtp->datasend("To: \"someone cool\" <cool@company.com>\n");
    $smtp->datasend("Subject: whatever...\n");
    $smtp->datasend("Reply-To: whatever\n");

    # skip one line before the message contents.  This tells mail clients 
    # the headers are done and the message is beginning.
    $smtp->datasend("\n");

    # The format of the message headers and the blank line is in RFC2822
    # aka Internet Message Format.

    $smtp->datasend($msg);

    # end the body of the message and start sending SMTP commands again
    $smtp->dataend;

    # SMTP QUIT 
    $smtp->quit;