ตัวอย่าง smtp command

Reference:

COMMAND:
telnet mail.reddit.com 25

COMMAND:
helo hi
RESPONSE:
250 mail.reddit.com

COMMAND:
mail from: youremail@gmail.com
RESPONSE:
250 2.1.0 Ok

COMMAND:
rcpt to: mailbox.does.not.exist@reddit.com
RESPONSE:
550 5.1.1 : Recipient address rejected: User unknown in local recipient table

COMMAND:
quit
RESPONSE:
221 2.0.0 Bye