diff --git a/packages/email/.npm/package/npm-shrinkwrap.json b/packages/email/.npm/package/npm-shrinkwrap.json
index aebb613b70..196835ba91 100644
--- a/packages/email/.npm/package/npm-shrinkwrap.json
+++ b/packages/email/.npm/package/npm-shrinkwrap.json
@@ -1,9 +1,9 @@
 {
   "dependencies": {
     "node4mailer": {
-      "version": "4.0.2",
-      "resolved": "https://registry.npmjs.org/node4mailer/-/node4mailer-4.0.2.tgz",
-      "from": "node4mailer@4.0.2"
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/node4mailer/-/node4mailer-4.0.3.tgz",
+      "from": "node4mailer@4.0.3"
     },
     "stream-buffers": {
       "version": "0.2.5",
diff --git a/packages/email/email.js b/packages/email/email.js
index af3c633d69..40124cbd89 100644
--- a/packages/email/email.js
+++ b/packages/email/email.js
@@ -28,6 +28,12 @@ var makeTransport = function (mailUrlString) {
                     mailUrlString + ") must be 'smtp' or 'smtps'");
   }
 
+  if (mailUrl.protocol === 'smtp:' && mailUrl.port === '465') {
+    Meteor._debug("The $MAIL_URL is 'smtp://...:465'.  " +
+                  "You probably want 'smtps://' (The 's' enables TLS/SSL) " +
+                  "since '465' is typically a secure port.");
+  }
+
   // Allow overriding pool setting, but default to true.
   if (!mailUrl.query) {
     mailUrl.query = {};
diff --git a/packages/email/package.js b/packages/email/package.js
index 7e5167f350..836e70f6f9 100644
--- a/packages/email/package.js
+++ b/packages/email/package.js
@@ -1,10 +1,10 @@
 Package.describe({
   summary: "Send email messages",
-  version: "1.2.1"
+  version: "1.2.3"
 });
 
 Npm.depends({
-  node4mailer: "4.0.2",
+  node4mailer: "4.0.3",
   "stream-buffers": "0.2.5"
 });