diff --git a/comm/mail/modules/DNS.jsm b/comm/mail/modules/DNS.jsm
index c63972b6a8..32769c1de6 100644
--- a/comm/mail/modules/DNS.jsm
+++ b/comm/mail/modules/DNS.jsm
@@ -44,11 +44,7 @@ load_libresolv.prototype = {
       } else if (os == "OpenBSD") {
         candidates = [{ name: "c", suffix: "" }];
       } else {
-        candidates = [
-          { name: "resolv.9", suffix: "" },
-          { name: "resolv", suffix: ".2" },
-          { name: "resolv", suffix: "" },
-        ];
+        candidates = [{ name: "c", suffix: "" }];
       }
       let tried = [];
       for (let candidate of candidates) {