fix: explode when wrong provider chosen

cli/domain/list.go

@@ -16,7 +16,7 @@ import (
 // DomainListCommand lists domains.
 var DomainListCommand = &cli.Command{
 	Name:      "list",
-	Usage:     "List domains for a server",
+	Usage:     "List domains",
 	Aliases:   []string{"ls"},
 	ArgsUsage: "<zone>",
 	Flags: []cli.Flag{
@@ -43,6 +43,8 @@ using "abra domain create".
 			if err != nil {
 				logrus.Fatal(err)
 			}
+		default:
+			logrus.Fatalf("'%s' is not a supported DNS provider", internal.DNSProvider)
 		}
 
 		records, err := provider.GetRecords(c.Context, zone)