Was running the tool to create certificate and it failed with 400 .
My domain is:remote.romartrans.com
I ran this command:
It produced this output:
1: Single binding of an IIS site
2: SAN certificate for all bindings of an IIS site
3: SAN certificate for all bindings of multiple IIS sites
4: Manually input host names
C: Cancel
Which kind of certificate would you like to create?: 4
Enter comma-separated list of host names, starting with the primary one: remote.romartrans.com
[INFO] Plugin Manual generated target [Manual] [1 binding - remote.romartrans.com]
1: Default Web Site
Choose site to create new bindings: 1
Enter an email address (not public, used for renewal fail notices): supportteam@lfrog.com
Do you agree to https://letsencrypt.org/documents/LE-SA-v1.2-November-15-2017.pdf? (y/n): - yes
[INFO] Authorize identifier: remote.romartrans.com
[INFO] Authorizing remote.romartrans.com using http-01 validation (SelfHosting)
[INFO] Answer should now be browsable at http://remote.romartrans.com/.well-known/acme-challenge/BWJKpzZA61RWJFbndyeUgAipO8aPMbdJso8tjijOXbE
[EROR] Authorization result: invalid
[EROR] ACME server reported:
[EROR] [type] urn:acme:error:connection
[EROR] [detail] Fetching http://remote.romartrans.com/.well-known/acme-challenge/BWJKpzZA61RWJFbndyeUgAipO8aPMbdJso8tjijOXbE: Connection refused
[EROR] [status] 400
[EROR] Create certificate failed