diff --git a/src/Model/Contact.php b/src/Model/Contact.php
index 606626192..8c8a25b6d 100644
--- a/src/Model/Contact.php
+++ b/src/Model/Contact.php
@@ -160,6 +160,7 @@ class Contact
 			$fields['created'] = DateTimeFormat::utcNow();
 		}
 
+		$fields = DI::dbaDefinition()->truncateFieldsForTable('contact', $fields);
 		DBA::insert('contact', $fields, $duplicate_mode);
 		$contact = DBA::selectFirst('contact', [], ['id' => DBA::lastInsertId()]);
 		if (!DBA::isResult($contact)) {
@@ -191,6 +192,7 @@ class Contact
 	 */
 	public static function update(array $fields, array $condition, $old_fields = [])
 	{
+		$fields = DI::dbaDefinition()->truncateFieldsForTable('contact', $fields);
 		$ret = DBA::update('contact', $fields, $condition, $old_fields);
 
 		// Apply changes to the "user-contact" table on dedicated fields
diff --git a/src/Model/GServer.php b/src/Model/GServer.php
index d0993141a..08cefba56 100644
--- a/src/Model/GServer.php
+++ b/src/Model/GServer.php
@@ -1330,7 +1330,7 @@ class GServer
 			return false;
 		}
 
-		$xrd = XML::parseString($curlResult->getBody());
+		$xrd = XML::parseString($curlResult->getBody(), true);
 		if (!is_object($xrd)) {
 			return false;
 		}
diff --git a/src/Model/Item.php b/src/Model/Item.php
index c00bd06de..741594f22 100644
--- a/src/Model/Item.php
+++ b/src/Model/Item.php
@@ -1649,13 +1649,13 @@ class Item
 		$post = Post::selectFirst(['id'], ['uri-id' => $item['uri-id'], 'uid' => $uid]);
 		if (!empty($post['id'])) {
 			if (!empty($item['event-id'])) {
-				$post = Post::selectFirst(['event-id'], ['uri-id' => $item['uri-id'], 'uid' => $uid]);
-				if (!empty($post['event-id'])) {
+				$event_post = Post::selectFirst(['event-id'], ['uri-id' => $item['uri-id'], 'uid' => $uid]);
+				if (!empty($event_post['event-id'])) {
 					$event = DBA::selectFirst('event', ['edited', 'start', 'finish', 'summary', 'desc', 'location', 'nofinish', 'adjust'], ['id' => $item['event-id']]);
 					if (!empty($event)) {
 						// We aren't using "Event::store" here, since we don't want to trigger any further action
-						$ret = DBA::update('event', $event, ['id' => $post['event-id']]);
-						Logger::info('Event updated', ['uid' => $uid, 'source-event' => $item['event-id'], 'target-event' => $post['event-id'], 'ret' => $ret]);
+						$ret = DBA::update('event', $event, ['id' => $event_post['event-id']]);
+						Logger::info('Event updated', ['uid' => $uid, 'source-event' => $item['event-id'], 'target-event' => $event_post['event-id'], 'ret' => $ret]);
 					}
 				}
 			}
diff --git a/src/Module/Api/Mastodon/PushSubscription.php b/src/Module/Api/Mastodon/PushSubscription.php
index dc07ab55a..945ca6392 100644
--- a/src/Module/Api/Mastodon/PushSubscription.php
+++ b/src/Module/Api/Mastodon/PushSubscription.php
@@ -50,13 +50,13 @@ class PushSubscription extends BaseApi
 			'endpoint'                      => $request['subscription']['endpoint'] ?? '',
 			'pubkey'                        => $request['subscription']['keys']['p256dh'] ?? '',
 			'secret'                        => $request['subscription']['keys']['auth'] ?? '',
-			Notification::TYPE_FOLLOW       => $request['data']['alerts'][Notification::TYPE_FOLLOW] ?? false,
-			Notification::TYPE_LIKE         => $request['data']['alerts'][Notification::TYPE_LIKE] ?? false,
-			Notification::TYPE_RESHARE      => $request['data']['alerts'][Notification::TYPE_RESHARE] ?? false,
-			Notification::TYPE_MENTION      => $request['data']['alerts'][Notification::TYPE_MENTION] ?? false,
-			Notification::TYPE_POLL         => $request['data']['alerts'][Notification::TYPE_POLL] ?? false,
-			Notification::TYPE_INTRODUCTION => $request['data']['alerts'][Notification::TYPE_INTRODUCTION] ?? false,
-			Notification::TYPE_POST         => $request['data']['alerts'][Notification::TYPE_POST] ?? false,
+			Notification::TYPE_FOLLOW       => filter_var($request['data']['alerts'][Notification::TYPE_FOLLOW] ?? false, FILTER_VALIDATE_BOOLEAN),
+			Notification::TYPE_LIKE         => filter_var($request['data']['alerts'][Notification::TYPE_LIKE] ?? false, FILTER_VALIDATE_BOOLEAN),
+			Notification::TYPE_RESHARE      => filter_var($request['data']['alerts'][Notification::TYPE_RESHARE] ?? false, FILTER_VALIDATE_BOOLEAN),
+			Notification::TYPE_MENTION      => filter_var($request['data']['alerts'][Notification::TYPE_MENTION] ?? false, FILTER_VALIDATE_BOOLEAN),
+			Notification::TYPE_POLL         => filter_var($request['data']['alerts'][Notification::TYPE_POLL] ?? false, FILTER_VALIDATE_BOOLEAN),
+			Notification::TYPE_INTRODUCTION => filter_var($request['data']['alerts'][Notification::TYPE_INTRODUCTION] ?? false, FILTER_VALIDATE_BOOLEAN),
+			Notification::TYPE_POST         => filter_var($request['data']['alerts'][Notification::TYPE_POST] ?? false, FILTER_VALIDATE_BOOLEAN),
 		];
 
 		$ret = Subscription::replace($subscription);
diff --git a/src/Protocol/ActivityPub/Receiver.php b/src/Protocol/ActivityPub/Receiver.php
index 8c68bcba6..10ff58b4b 100644
--- a/src/Protocol/ActivityPub/Receiver.php
+++ b/src/Protocol/ActivityPub/Receiver.php
@@ -113,9 +113,16 @@ class Receiver
 			APContact::unmarkForArchival($apcontact);
 		}
 
+		$sig_contact = HTTPSignature::getKeyIdContact($header);
+		if (APContact::isRelay($sig_contact)) {
+			Logger::info('Message from a relay', ['url' => $sig_contact['url']]);
+			self::processRelayPost($ldactivity, $sig_contact['url']);
+			return;
+		}
+
 		$http_signer = HTTPSignature::getSigner($body, $header);
 		if ($http_signer === false) {
-			Logger::warning('Invalid HTTP signature, message will be discarded.');
+			Logger::warning('Invalid HTTP signature, message will be discarded.', ['uid' => $uid, 'actor' => $actor, 'header' => $header, 'body' => $body]);
 			return;
 		} elseif (empty($http_signer)) {
 			Logger::info('Signer is a tombstone. The message will be discarded, the signer account is deleted.');
@@ -170,18 +177,43 @@ class Receiver
 	{
 		$type = JsonLD::fetchElement($activity, '@type');
 		if (!$type) {
-			Logger::info('Empty type', ['activity' => $activity, 'actor' => $actor]);
+			Logger::notice('Empty type', ['activity' => $activity, 'actor' => $actor]);
 			return;
 		}
 
-		if ($type != 'as:Announce') {
-			Logger::info('Not an announcement', ['activity' => $activity, 'actor' => $actor]);
-			return;
-		}
+		$object_type = JsonLD::fetchElement($activity, 'as:object', '@type') ?? '';
 
 		$object_id = JsonLD::fetchElement($activity, 'as:object', '@id');
 		if (empty($object_id)) {
-			Logger::info('No object id found', ['activity' => $activity, 'actor' => $actor]);
+			Logger::notice('No object id found', ['type' => $type, 'object_type' => $object_type, 'actor' => $actor, 'activity' => $activity]);
+			return;
+		}
+
+		$handle = ($type == 'as:Announce');
+
+		if (!$handle && in_array($type, ['as:Create', 'as:Update'])) {
+			$handle = in_array($object_type, self::CONTENT_TYPES);
+		}
+
+		if (!$handle) {
+			$trust_source = false;
+			$object_data = self::prepareObjectData($activity, 0, false, $trust_source);
+
+			if (!$trust_source) {
+				Logger::notice('Activity trust could not be achieved.',  ['type' => $type, 'object_type' => $object_type, 'object_id' => $object_id, 'actor' => $actor, 'activity' => $activity]);
+				return;
+			}
+
+			if (empty($object_data)) {
+				Logger::notice('No object data found', ['type' => $type, 'object_type' => $object_type, 'object_id' => $object_id, 'actor' => $actor, 'activity' => $activity]);
+				return;
+			}
+	
+			if (self::routeActivities($object_data, $type, true)) {
+				Logger::debug('Handled activity', ['type' => $type, 'object_type' => $object_type, 'object_id' => $object_id, 'actor' => $actor]);
+			} else {
+				Logger::info('Unhandled activity', ['type' => $type, 'object_type' => $object_type, 'object_id' => $object_id, 'actor' => $actor, 'activity' => $activity]);
+			}
 			return;
 		}
 
@@ -196,7 +228,7 @@ class Receiver
 			return;
 		}
 
-		Logger::info('Got relayed message id', ['id' => $object_id, 'actor' => $actor]);
+		Logger::debug('Got relayed message id', ['id' => $object_id, 'actor' => $actor]);
 
 		$item_id = Item::searchByLink($object_id);
 		if ($item_id) {
diff --git a/src/Protocol/OStatus.php b/src/Protocol/OStatus.php
index 6531d75af..3758b0fe6 100644
--- a/src/Protocol/OStatus.php
+++ b/src/Protocol/OStatus.php
@@ -1169,10 +1169,6 @@ class OStatus
 				];
 				XML::addElement($doc, $root, 'link', '', $attributes);
 				break;
-
-			default:
-				Logger::warning('Unsupported type', ['type' => $siteinfo['type'], 'url' => $siteinfo['url'] ?? '']);
-				break;
 		}
 
 		if (!DI::config()->get('system', 'ostatus_not_attach_preview') && ($siteinfo['type'] != 'photo') && isset($siteinfo['image'])) {
diff --git a/src/Util/HTTPSignature.php b/src/Util/HTTPSignature.php
index f4f0a4e85..225a2bcf2 100644
--- a/src/Util/HTTPSignature.php
+++ b/src/Util/HTTPSignature.php
@@ -485,6 +485,31 @@ class HTTPSignature
 		return $curlResult;
 	}
 
+	/**
+	 * Fetch the apcontact entry of the keyId in the given header
+	 *
+	 * @param array $http_headers
+	 *
+	 * @return array APContact entry
+	 */
+	public static function getKeyIdContact(array $http_headers): array
+	{
+		if (empty($http_headers['HTTP_SIGNATURE'])) {
+			Logger::debug('No HTTP_SIGNATURE header', ['header' => $http_headers]);
+			return [];
+		}
+
+		$sig_block = self::parseSigHeader($http_headers['HTTP_SIGNATURE']);
+
+		if (empty($sig_block['keyId'])) {
+			Logger::debug('No keyId', ['sig_block' => $sig_block]);
+			return [];
+		}
+
+		$url = (strpos($sig_block['keyId'], '#') ? substr($sig_block['keyId'], 0, strpos($sig_block['keyId'], '#')) : $sig_block['keyId']);
+		return APContact::getByURL($url);
+	}
+
 	/**
 	 * Gets a signer from a given HTTP request
 	 *
diff --git a/src/Worker/UpdateContacts.php b/src/Worker/UpdateContacts.php
index e6469fe19..31426e79f 100644
--- a/src/Worker/UpdateContacts.php
+++ b/src/Worker/UpdateContacts.php
@@ -55,7 +55,7 @@ class UpdateContacts
 			$condition = array_merge(['local-data' => true], $condition);
 		}
 
-		$condition = array_merge(["`next-update` < ?", DateTimeFormat::utcNow()], $condition);
+		$condition = DBA::mergeConditions(["`next-update` < ?", DateTimeFormat::utcNow()], $condition);
 		$contacts = DBA::select('contact', ['id'], $condition, ['order' => ['next-update'], 'limit' => $limit]);
 		$count = 0;
 		while ($contact = DBA::fetch($contacts)) {