Simple SMTP test with shell script(bash)

smtp_test.sh

#!/bin/bash

EMAIL_BODY="Test from telnet - $(LANG=c date)"
EMAIL_SUBJECT="Telnet test - $(LANG=c date)"
SMTP_SERVER="smtp.some.server"
SMTP_PORT="25"
MAIL_TO="asdf@foo.com"
MAIL_FROM="asdf@bar.com"

echo ">> ${my_email_subject}"

nc ${SMTP_SERVER} ${SMTP_PORT} << EOF
EHLO simple.bash.client
MAIL FROM:${MAIL_FROM}
RCPT TO:${MAIL_TO}
DATA
FROM:${MAIL_FROM}
TO:${MAIL_TO}
SUBJECT: ${EMAIL_SUBJECT}
${EMAIL_BODY}
.
QUIT
EOF