SMTP -> ERROR: RCPT not accepted from server: 555-5.5.2 Syntax error, cannot decode response. For more information, go to
555-5.5.2 https://support.google.com/a/answer/3221692 and review RFC 5321
555 5.5.2 specifications. af79cd13be357-9366e2294a0sm179776685a.27 - gsmtp