diff --git a/app/Activity.php b/app/Activity.php
index 130d947f5..18a4e74de 100644
--- a/app/Activity.php
+++ b/app/Activity.php
@@ -7,6 +7,7 @@ use Illuminate\Database\Eloquent\Model;
 class Activity extends Model
 {
     protected $dates = ['processed_at'];
+    protected $fillable = ['data', 'to_id', 'from_id', 'object_type'];
 
 	public function toProfile()
 	{
diff --git a/app/Util/ActivityPub/Helpers.php b/app/Util/ActivityPub/Helpers.php
index f98647e97..034c7bbf7 100644
--- a/app/Util/ActivityPub/Helpers.php
+++ b/app/Util/ActivityPub/Helpers.php
@@ -181,9 +181,11 @@ class Helpers {
 
 	public static function zttpUserAgent()
 	{
+		$version = config('pixelfed.version');
+		$url = config('app.url');
 		return [
 			'Accept'     => 'application/activity+json',
-			'User-Agent' => 'PixelfedBot - https://pixelfed.org',
+			'User-Agent' => "(Pixelfed/{$version}; +{$url})",
 		];
 	}
 
@@ -236,10 +238,6 @@ class Helpers {
 				$activity = ['object' => $res];
 			}
 
-			if(isset($activity['object']['content']) == false) {
-				abort(400, 'Invalid object');
-			}
-
 			$scope = 'private';
 			
 			$cw = isset($res['sensitive']) ? (bool) $res['sensitive'] : false;
@@ -287,10 +285,10 @@ class Helpers {
 				} 
 			}
 
-			if(!self::validateUrl($res['id']) ||
+			if(!self::validateUrl($activity['object']['id']) ||
 			   !self::validateUrl($activity['object']['attributedTo'])
 			) {
-				abort(400, 'Invalid object url');
+				return;
 			}
 
 			$idDomain = parse_url($res['id'], PHP_URL_HOST);
@@ -302,7 +300,7 @@ class Helpers {
 				$actorDomain !== $urlDomain || 
 				$idDomain !== $actorDomain
 			) {
-				abort(400, 'Invalid object');
+				return;
 			}
 
 			$profile = self::profileFirstOrNew($activity['object']['attributedTo']);
diff --git a/app/Util/ActivityPub/Inbox.php b/app/Util/ActivityPub/Inbox.php
index 195b8d6ef..802c1e5cb 100644
--- a/app/Util/ActivityPub/Inbox.php
+++ b/app/Util/ActivityPub/Inbox.php
@@ -40,6 +40,10 @@ class Inbox
     public function handle()
     {
         $this->handleVerb();
+
+        (new Activity())->create([
+            'data' => json_encode($this->payload)
+        ]);
     }
 
     public function handleVerb()
@@ -307,6 +311,8 @@ class Inbox
         $id = $this->payload['object']['id'];
         switch ($type) {
             case 'Person':
+                    // todo: fix race condition
+                    return; 
                     $profile = Helpers::profileFetch($actor);
                     if(!$profile || $profile->private_key != null) {
                         return;
@@ -323,8 +329,6 @@ class Inbox
                 break;
 
             case 'Tombstone':
-                    // todo: fix race condition
-                    return; 
                     $profile = Helpers::profileFetch($actor);
                     $status = Status::whereProfileId($profile->id)
                         ->whereUri($id)