PHP发邮件报错，用的是亚马逊的服务

Question

Debug:220 email-smtp.amazonaws.com ESMTP SimpleEmailService-3857388951 xJkweVuZhbjLW22qU4E2

Debug:cmd:HELO email-smtp.us-west-2.amazonaws.com ;response:250 email-smtp.amazonaws.com

Debug:cmd:AUTH LOGIN ;response:530 Must issue a STARTTLS command first

Debug:cmd:SMTP用户名;response:500 Error: command not implemented

Debug:cmd:SMTP密码 ;response:500 Error: command not implemented

Debug:cmd:MAIL FROM: ;response:530 Authentication required

Debug:cmd:RCPT TO: ;response:503 Error: need MAIL command

Debug:cmd:DATA ;response:503 Error: need MAIL command

Debug:cmd:From:[e-mail] To:[e-mail] Subject:aa Content-Type: Text/html; charset=utf-8 bb . ;response:500 Error: command not implemented

Debug:cmd:QUIT ;response:500 Error: command not implemented

Answer 1

 530 Must issue a STARTTLS command first

邮件服务器只支持加密协议