My certificate just got expired. and I want to renew it or make a new one for my website.
My first certificate was 3 month ago I forgot how I did manage to get that , so I try use Certbot to renew it .
As you see I don’t speak English very well. so , if threr are something miss please remaind me.
certbot renew --dry-run to renew my certificate. and then it throw an error.
Failed authorization procedure. cal.lxserv.cn (tls-sni-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: DNS problem: SERVFAIL looking up A for cal.lxserv.cn, www.lxserv.cn (tls-sni-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: DNS problem: SERVFAIL looking up A for www.lxserv.cn
I try do the reading , but my English is just not good enough to make me understand every thing. but I think it may be some DNS problem. so I did this
dig @126.96.36.199 www.lxserv.cn
but it seems to be normal. it returns like this
`; <<>> DiG 9.9.5-3ubuntu0.14-Ubuntu <<>> @188.8.131.52 www.lxserv.cn
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1845
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;www.lxserv.cn. IN A
;; ANSWER SECTION:
www.lxserv.cn. 59 IN A 184.108.40.206
;; Query time: 101 msec
;; SERVER: 220.127.116.11#53(18.104.22.168)
;; WHEN: Sun May 14 02:44:19 JST 2017
;; MSG SIZE rcvd: 58`
I don’t know how to slove this, if it was a DNS problem , why at the first time I get the certification successfully . and why I getting this error by now.
if needed I’m using Oray.com’s ddns.