mail.mserv.top has an A (IPv4) record (155.138.161.117) but a request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address.
A timeout was experienced while communicating with mail.mserv.top/155.138.161.117: Get http://mail.mserv.top/.well-known/acme-challenge/letsdebug-test: dial tcp 155.138.161.117:80: i/o timeout
Trace:
@0ms: Making a request to http://mail.mserv.top/.well-known/acme-challenge/letsdebug-test (using initial IP 155.138.161.117)
@0ms: Dialing 155.138.161.117
@10000ms: Experienced error: dial tcp 155.138.161.117:80: i/o timeout
A test authorization for mail.mserv.top to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://mail.mserv.top/.well-known/acme-challenge/lgeG6G6xmHL5PM-kYeHRSNGCRtAqat0L1UdHygCFzK0: Timeout during connect (likely firewall problem)
Requests made to the domain
Request to: mail.mserv.top/155.138.161.117, Result: [Address Type=IPv4,Server=,HTTP Status=0], Issue: ANotWorking
Trace:
@0ms: Making a request to http://mail.mserv.top/.well-known/acme-challenge/letsdebug-test (using initial IP 155.138.161.117)
@0ms: Dialing 155.138.161.117
@10000ms: Experienced error: dial tcp 155.138.161.117:80: i/o timeout
A and AAAA records found for this domain
mail.mserv.top. 0 IN A 155.138.161.117
Challenge update failures for mail.mserv.top in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/38621843
acme: error code 400 "urn:ietf:params:acme:error:connection": Fetching http://mail.mserv.top/.well-known/acme-challenge/lgeG6G6xmHL5PM-kYeHRSNGCRtAqat0L1UdHygCFzK0: Timeout during connect (likely firewall problem)
The IANA public suffix is the TLD of the Registered Domain
The TLD for mail.mserv.top is: top
The current status.io status for Let's Encrypt
Operational