'Mail From:' SMTP command not working with google smtp server

Question

I'm trying to send an email using smtp-relay.gmail.com as a relay server, but when I try to use the 'Mail From:' command, I get this error:

c: mail from: [email protected]

s: 555 5.5.2 Syntax error. f23sm825435wmf.2 - gsmtp

Answer 1

use brackets <> (some mail servers does not require this)

MAIL FROM: <[email protected]>