I'm trying to do email spoofing in cmd in telnet but failed to do so.
C:\Documents and Settings\Owner>telnet alt3.gmail-smtp-in.l.google.com 25
Then it brought me here
220 mx.google.com ESMTP p59si7495147qga.25 - gsmtp
Typed this one
Then it produced:
250-mx.google.com at your service, [188.8.131.52] 250-SIZE 35882577 250-8BITMIME 250-STARTTLS 250-ENHANCEDSTATUSCODES 250 CHUNKING
I continued typing this:
MAIL FROM:<firstname.lastname@example.org> 502 5.5.1 Unrecognized command. s10si7413775qak.221 - gsmtp
Can someone please tell me why do I get error. Isn't it that Gmail is allowing outgoing mail relaying? And may I ask if I can use a disposable/temporary email provider such as dispostable.com for the recepient of this email?