MUA / SMTP client / script to send email via a mail relay server

[Daniel Carrillo]

2011/11/29 sunhux G <sunhux at gmail.com>:
> Need to clarify on Daniel's script :
> Understand Daniel has tested it but I got an issue with RCPT TO:
>
>
> I login directly to the Postfix server & test it:
> # telnet localhost 25
> 220 smtp.yy.zz ESMTP
> helo me
> 250 servernm.yy.zz
> MAIL FROM: <fromsms1 at yy.zz>
> 250 Ok
> RCPT TO: <mail at yy.zz>
> 550 <mail at yy.zz>: Recipient address rejected: User unknown in relay
> recipient table

MTA is rejecting that user.