Error when sending mail via netcat: 550 5.1.3?

Question

Email

When sending mail via net cat, I get an error 550, the type is not a valid user, although I enter everything correctly, how can I fix it?

$ nc mxs.mail.ru 25
220 mxs.mail.ru ESMTP ready
HELO hdjdj
250 mxs.mail.ru
MAIL FROM:[email protected]
250 2.0.0 OK
RCPT TO: [email protected]
550 5.1.3 Bad destination mailbox address syntax: invalid mailbox. Local mailbox [email protected] is unavailable: Ill-formatted e-mail address

Answer 1

You translate the error, or what?
You have an incorrect address format, addresses for SMTP must be submitted in this form:<[email protected]>

Answer 2

If you really want it with netcatexactly, then here .