Ssl 让我们加密安装失败

--我的英语水平还不够--

我尝试在CentOS上加密设置（VPS固定IP地址） ->它成功了

我尝试设置让我们在Debian上加密（没有固定的IP地址和内部服务器） ->它失败了

我用这个命令尝试手动模式

./letsencrypt-auto certonly --manual -d #MY-DOMAIN# --server HTTPS://acme-v01.api.letsencrypt.org/directory

那个命令说把密钥文件放进去。 显示随机字符串。文件名和键代码。2随机字符串

    http://#MY-DOMAIN#/.well-known/acme-challenge/#LONG-RANDOM-FILENAME#

是的，我确实保存了关键域文档根

//My Domain/Doc Root/.well-known/acme challenge/#LONG-RANDOM-FILENAME的路径#

5.通过其他网络检查文件。 通道 ->它成功了

6.继续让我们加密安装程序。但是

IMPORTANT NOTES:
 - The following errors were reported by the server:

   Domain: #MY-DOMAIN#
   Type:   connection
   Detail: Could not connect to
   http://#MY-DOMAIN#/.well-known/acme-challenge/#LONG-RANDOM-FILENAME#

   To fix these errors, please make sure that your domain name was
   entered correctly and the DNS A record(s) for that domain
   contain(s) the right IP address. Additionally, please check that
   your computer has a publicly routable IP address and that no
   firewalls are preventing the server from communicating with the
   client. If you're using the webroot plugin, you should also verify
   that you are serving files from the webroot path you provided.

他说错误。无法连接我的服务器。 但是我的域名已经发布了

并通过Dig命令检查DNS

   ;; QUESTION SECTION:
   ;#MY-DOMAIN#.                    IN      A

   ;; ANSWER SECTION:
   #MY-DOMAIN#.             120     IN      A       #MY-SERVER-IPADDR#

我的家庭服务器IP地址已在2个月前确定。 Apache日志文件不包括访问日志。 为什么加密服务器不能监视我的服务器