validate email addres

[arykalin@ziro ~]$ telnet smtp.myhost.dot 25
Trying 10.0.0.10 ...
Connected to smtp.myhost.dot.
Escape character is '^]'.
220 Mail.Ru ESMTP
HELO  ziro.home.dot
250 smtp.myhost.dot ready to serve
MAIL FROM:
250 OK
RCPT TO:  
250 OK
DATA
354 Go ahead

зы на маил ру не прокатит