Sending mail with hostname spoof | telnet HELO / EHLO

Hi Guys, 

I am able to send mail via telnet but can't do it using PS. 
The problem i can't solve is EHLO command.
I am using special hostname to be able to send alert mail via telnet.

How can i spoof sender hostname in PS?
Is there any parameter coresponding to EHLO/HELO in PS ?

P.S. found similar thread http://powershell.com/cs/forums/p/11843/20619.aspx#20619
but there is no answer for my question. 

Thanks in advance.

hermitagup