lnmp ssl安装是，求救老大帮忙

sxcisco

1. /bin/certbot [found]
   
2. Starting create SSL Certificate use Let's Encrypt...
   
3. Saving debug log to /var/log/letsencrypt/letsencrypt.log
   
4. Plugins selected: Authenticator webroot, Installer None
   
5. Obtaining a new certificate
   
6. Performing the following challenges:
   
7. http-01 challenge for www.cnccit.com
   
8. Using the webroot path /home/wwwroot/www.cnccit.com for all unmatched domains.
   
9. Waiting for verification...
   
10. Cleaning up challenges
    
11. Failed authorization procedure. www.cnccit.com (http-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: DNS problem: SERVFAIL looking up CAA for www.cnccit.com
    
12. 
    
13. IMPORTANT NOTES:
    
14. - The following errors were reported by the server:
    
15. 
    
16.    Domain: www.cnccit.com
    
17.    Type:   connection
    
18.    Detail: DNS problem: SERVFAIL looking up CAA for www.cnccit.com
    
19. 
    
20.    To fix these errors, please make sure that your domain name was
    
21.    entered correctly and the DNS A/AAAA record(s) for that domain
    
22.    contain(s) the right IP address. Additionally, please check that
    
23.    your computer has a publicly routable IP address and that no
    
24.    firewalls are preventing the server from communicating with the
    
25.    client. If you're using the webroot plugin, you should also verify
    
26.    that you are serving files from the webroot path you provided.
    
27. Let's Encrypt SSL Certificate create failed!

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说dns错误，不知道为什么哦；

licess

解析没生效或者dns有问题