add DNS checker and run against suspicious hosts

2025-11-22 02:45:34 +01:00
1 changed files with 1 additions and 2 deletions
--- a/external/cmd/signup/main.go
+++ b/external/cmd/signup/main.go
@ -137,8 +137,7 @@ func DigMX(raw string) (domains []string, err error) {
 		records, e := net.LookupMX(host[1:])
 		if e != nil {
 			err = ErrNoSuchDomain
-		}
-		if len(records) == 0 {
+		} else if len(records) == 0 {
 			err = ErrNoSuchMailserver
 		} else {
 			ok = true