【求助】calibre测试正常但是发送email不可用

代码在这
calibre, version 3.46.0 (win32, embedded-python: True)
无法通过电子邮件发送书籍: 失败: 把 设计结合自然 发Email到（我的kindle邮箱地址）
Starting job: 把 设计结合自然 发Email到 （kindle）
Sending failed...
Traceback (most recent call last):
File "site-packages\calibre\gui2\email.py", line 45, in run
File "site-packages\calibre\gui2\email.py", line 117, in sendmail
File "site-packages\calibre\utils\smtp.py", line 267, in compose_mail
File "site-packages\calibre\utils\smtp.py", line 105, in create_mail
File "email\message.py", line 137, in as_string
File "email\generator.py", line 83, in flatten
File "email\generator.py", line 108, in _write
File "email\generator.py", line 134, in _dispatch
File "email\generator.py", line 234, in _handle_multipart
MemoryError: out of memory
Retrying in 1 seconds...
Waiting 1 seconds before sending, to avoid being marked as spam.
You can control this delay via Preferences->Tweaks
connect: (u'smtp.163.com', 465)
connect: (u'smtp.163.com', 465)
reply: '220 163.com Anti-spam GT for Coremail System (163com[20141201])\r\n'
reply: retcode (220); Msg: 163.com Anti-spam GT for Coremail System (163com[20141201])
connect: 163.com Anti-spam GT for Coremail System (163com[20141201])
send: u'ehlo [192.168.80.1]\r\n'
reply: '250-mail\r\n'
reply: '250-PIPELINING\r\n'
reply: '250-AUTH LOGIN PLAIN\r\n'
reply: '250-AUTH=LOGIN PLAIN\r\n'
reply: '250-coremail 1Uxr2xKj7kG0xkI17xGrU7I0s8FY2U3Uj8Cz28x1UUUUU7Ic2I0Y2UrLyHesUCa0xDrUUUUj\r\n'
reply: '250-STARTTLS\r\n'
reply: '250 8BITMIME\r\n'
reply: retcode (250); Msg: mail
PIPELINING
AUTH LOGIN PLAIN
AUTH=LOGIN PLAIN
coremail 1Uxr2xKj7kG0xkI17xGrU7I0s8FY2U3Uj8Cz28x1UUUUU7Ic2I0Y2UrLyHesUCa0xDrUUUUj
STARTTLS
8BITMIME
send: AUTH <censored>
reply: '235 Authentication successful\r\n'
reply: retcode (235); Msg: Authentication successful
send: u'mail FROM:<13671651353@163.com>\r\n'
reply: '250 Mail OK\r\n'
reply: retcode (250); Msg: Mail OK
send: u'rcpt TO:<8613671651353@kindle.cn>\r\n'
reply: '250 Mail OK\r\n'
reply: retcode (250); Msg: Mail OK
send: 'data\r\n'
reply: '354 End data with <CR><LF>.<CR><LF>\r\n'
reply: retcode (354); Msg: End data with <CR><LF>.<CR><LF>
data: (354, 'End data with <CR><LF>.<CR><LF>')
send: 'quit\r\n'
Sending failed...
Traceback (most recent call last):
File "site-packages\calibre\gui2\email.py", line 45, in run
File "site-packages\calibre\gui2\email.py", line 135, in sendmail
File "site-packages\calibre\utils\smtp.py", line 173, in sendmail
File "site-packages\calibre\utils\smtplib.py", line 774, in sendmail
File "site-packages\calibre\utils\smtplib.py", line 532, in data
File "site-packages\calibre\utils\smtplib.py", line 347, in send
MemoryError
Job: "把 设计结合自然 发Email到（我的kindle邮箱地址）" failed with error:
Traceback (most recent call last):
File "site-packages\calibre\gui2\threaded_jobs.py", line 83, in start_work
File "site-packages\calibre\gui2\email.py", line 102, in __call__
MemoryError
Called with args: (u'C:\\Users\\\u963f\u91ca\\AppData\\Local\\Temp\\calibre_te5zys\\jzrbbxcaltmpfmt.mobi', u'She Ji Jie He Zi Ran - Stephan Huck.mobi', u'8613671651353@kindle.cn', u'\u7535\u5b50\u4e66\uff1a \u8bbe\u8ba1\u7ed3\u5408\u81ea\u7136', u'\u5df2\u6dfb\u52a0, \u4f60\u53ef\u4ee5\u4ece\u4e2d\u83b7\u53d6\u7535\u5b50\u4e66\n\n\u8bbe\u8ba1\u7ed3\u5408\u81ea\u7136\n\t\u7531 Stephan Huck\n\n\u4f7f\u7528 MOBI \u683c\u5f0f.') {u'log': <calibre.utils.logging.GUILog object at 0x0E4D5D50>, u'notifications': <Queue.Queue instance at 0x0E4DD738>, u'abort': <threading._Event object at 0x0E4D58F0>}

悄咪咪顶一下求求大家帮忙，重装也没用

软件有问题了