텔넷을 통해 이메일을 보내는 스크립트를 어떻게 생성합니까?

sh이메일로 보낼 파일을 만들고 싶습니다 telnet. 이 같은:

read -p "from: " from
read -p "from (friendly name): " fromf
read -p "dest: " dest
read -p "dest (friendly name): " destf
read -p "subjct: " subjct
read -p "text: " text
telnet server port (the user put this values on sh file directly)
helo
mail from: $from
rcpt to: $dest
data
from: $fromf <$from>
to: $destf <$dest>
subject: $subjct
$text
.

어떻게 해야 합니까?