diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6dbbe615..538fa8d8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Release Notes for Campaign
 
+## 3.4.2 - 2024-08-02
+
+### Changed
+
+- IP addresses are now logged in failed webhook requests from Postmark.
+
 ## 3.4.1 - 2024-07-15
 
 ### Changed
diff --git a/composer.json b/composer.json
index 8517d2c0..084be03b 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
   "name": "putyourlightson/craft-campaign",
   "description": "Send and manage email campaigns, contacts and mailing lists.",
-  "version": "3.4.1",
+  "version": "3.4.2",
   "type": "craft-plugin",
   "homepage": "https://putyourlightson.com/plugins/campaign",
   "license": "proprietary",
diff --git a/src/controllers/WebhookController.php b/src/controllers/WebhookController.php
index 7681cff6..77317ef8 100755
--- a/src/controllers/WebhookController.php
+++ b/src/controllers/WebhookController.php
@@ -268,8 +268,11 @@ public function actionPostmark(): ?Response
         // https://postmarkapp.com/support/article/800-ips-for-firewalls#webhooks
         $allowedIpAddresses = Campaign::$plugin->settings->postmarkAllowedIpAddresses;
 
-        if ($allowedIpAddresses && !in_array($this->request->getRemoteIP(), $allowedIpAddresses)) {
-            return $this->asRawFailure('IP address not allowed.');
+        if ($allowedIpAddresses !== null) {
+            $ipAddress = $this->request->getRemoteIP();
+            if (!in_array($ipAddress, $allowedIpAddresses)) {
+                return $this->asRawFailure(Craft::t('campaign', 'IP address not allowed. [{ipAddress}]', ['ipAddress' => $ipAddress]));
+            }
         }
 
         $eventType = $this->request->getBodyParam('RecordType');
diff --git a/src/services/SendoutsService.php b/src/services/SendoutsService.php
index 4a5c1644..d81b6478 100755
--- a/src/services/SendoutsService.php
+++ b/src/services/SendoutsService.php
@@ -394,7 +394,7 @@ public function sendNotification(SendoutElement $sendout): void
         $variables = [
             'title' => $sendout->title,
             'emailSettingsUrl' => UrlHelper::cpUrl('campaign/settings/email'),
-            'sendoutUrl' => $sendout->cpEditUrl,
+            'sendoutUrl' => $sendout->getCpEditUrl(),
             'sendAttempts' => Campaign::$plugin->settings->maxSendAttempts,
         ];