>> 220 newxmesmtplogicsvrszc16-0.qq.com XMail Esmtp QQ Mail Server.
<< EHLO localhost
>> 250-newxmesmtplogicsvrszc16-0.qq.com
>> 250-PIPELINING
>> 250-SIZE 73400320
>> 250-STARTTLS
>> 250-AUTH LOGIN PLAIN XOAUTH XOAUTH2
>> 250-AUTH=LOGIN
>> 250-MAILCOMPRESS
>> 250-SMTPUTF8
>> 250 8BITMIME
<< MAIL FROM:<crated@qq.com>
>> 503 Error: need EHLO and AUTH first !
<< quit
