我用qq邮箱订阅，但是就是不行！Majordomo@vger.kernel.org  标题随便，内容为：
subscribe linux-kernel
但是失败的信息
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>>>> This is a multi-part message in MIME format.
**** Command 'this' not recognized.
>>>> 
>>>> ------=_NextPart_50DAA96C_D6725D18_1EBF4D76
**** Command '------=_nextpart_50daa96c_d6725d18_1ebf4d76' not recognized.
>>>> Content-Type: text/plain;
**** Command 'content-type:' not recognized.
>>>> charset="gb18030"
**** Command 'charset="gb18030"' not recognized.
>>>> Content-Transfer-Encoding: base64
**** Command 'content-transfer-encoding:' not recognized.
>>>> 
>>>> aGVscA==
**** Command 'agvsca==' not recognized.
>>>> 
>>>> ------=_NextPart_50DAA96C_D6725D18_1EBF4D76
**** Command '------=_nextpart_50daa96c_d6725d18_1ebf4d76' not recognized.
>>>> Content-Type: text/html;
**** Command 'content-type:' not recognized.
>>>> charset="gb18030"
**** Command 'charset="gb18030"' not recognized.
>>>> Content-Transfer-Encoding: base64
**** Command 'content-transfer-encoding:' not recognized.
>>>> 
>>>> PGRpdj48Zm9udCBmYWNlPSJUaW1lcyBOZXcgUm9tYW4iPmhlbHA8L2ZvbnQ+PC9kaXY+
**** Command 'pgrpdj48zm9udcbmywnlpsjuaw1lcybozxcgum9tyw4ipmhlbha8l2zvbnq+pc9kaxy+' not recognized.
****
**** TOO MANY UNKNOWN INPUT LINES, ABORTING PROCESSING
**** No valid commands found.
**** Commands must be in message BODY, not in HEADER.
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应该是格式有问题，但是就不知道哪里出错了？

发送邮件格式要设置成纯文本,不要html格式