Mine

root@ashley:~# nc 192.168.1.49 25 <<_eof
> ehlo britney.tuxcrafter.net
> mail from: <info@tuxcrafter.net>
> rcpt to: <info@tuxcrafter.net>
> data
> bla
> .
> quit
> _eof
220 britney.tuxcrafter.net ESMTP Postfix
250-britney.tuxcrafter.net
250-PIPELINING
250-SIZE 10240000
250-ETRN
250-STARTTLS
250-AUTH PLAIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
250 2.1.0 Ok
250 2.1.5 Ok
503 5.5.0 <DATA>: Data command rejected: Improper use of SMTP command pipelining
502 5.5.2 Error: command not recognized
502 5.5.2 Error: command not recognized
221 2.0.0 Bye