diff --git a/daemon.py b/daemon.py
index f807d014e..b5ee46d28 100644
--- a/daemon.py
+++ b/daemon.py
@@ -2199,11 +2199,11 @@ class PubServer(BaseHTTPRequestHandler):
             if not message_json.get(check_field):
                 continue
             if not isinstance(message_json[check_field], list):
-                print('INBOX: To and Cc fields should be lists ' +
-                      check_field + ' ' + str(message_json[check_field]))
-                self._400()
-                self.server.postreq_busy = False
-                return 3
+                print('INBOX: WARN: To and Cc fields should be lists, ' +
+                      check_field + '=' + str(message_json[check_field]))
+#                self._400()
+#                self.server.postreq_busy = False
+#                return 3
 
         if has_object_dict(message_json):
             if debug:
diff --git a/desktop_client.py b/desktop_client.py
index a7b90b254..fc67a2535 100644
--- a/desktop_client.py
+++ b/desktop_client.py
@@ -213,18 +213,34 @@ def _post_is_to_you(actor: str, post_json_object: {}) -> bool:
     """
     to_your_actor = False
     if post_json_object.get('to'):
-        if actor in post_json_object['to']:
-            to_your_actor = True
+        if isinstance(post_json_object['to'], list):
+            if actor in post_json_object['to']:
+                to_your_actor = True
+        elif isinstance(post_json_object['to'], str):
+            if actor == post_json_object['to']:
+                to_your_actor = True
     if not to_your_actor and post_json_object.get('cc'):
-        if actor in post_json_object['cc']:
-            to_your_actor = True
+        if isinstance(post_json_object['cc'], list):
+            if actor in post_json_object['cc']:
+                to_your_actor = True
+        elif isinstance(post_json_object['cc'], str):
+            if actor == post_json_object['cc']:
+                to_your_actor = True
     if not to_your_actor and has_object_dict(post_json_object):
         if post_json_object['object'].get('to'):
-            if actor in post_json_object['object']['to']:
-                to_your_actor = True
+            if isinstance(post_json_object['to'], list):
+                if actor in post_json_object['object']['to']:
+                    to_your_actor = True
+            elif isinstance(post_json_object['to'], str):
+                if actor == post_json_object['object']['to']:
+                    to_your_actor = True
         if not to_your_actor and post_json_object['object'].get('cc'):
-            if actor in post_json_object['object']['cc']:
-                to_your_actor = True
+            if isinstance(post_json_object['cc'], list):
+                if actor in post_json_object['object']['cc']:
+                    to_your_actor = True
+            elif isinstance(post_json_object['cc'], str):
+                if actor == post_json_object['object']['cc']:
+                    to_your_actor = True
     return to_your_actor
 
 
diff --git a/inbox.py b/inbox.py
index 906b7b04b..38c53a67d 100644
--- a/inbox.py
+++ b/inbox.py
@@ -3846,8 +3846,12 @@ def _send_to_group_members(server, session, session_onion, session_i2p,
     domain = handle.split('@')[1]
     domain_full = get_full_domain(domain, port)
     group_actor = local_actor_url(http_prefix, nickname, domain_full)
-    if group_actor not in post_json_object['to']:
-        return
+    if isinstance(post_json_object['to'], list):
+        if group_actor not in post_json_object['to']:
+            return
+    else:
+        if group_actor != post_json_object['to']:
+            return
     cc_str = ''
     nickname = handle.split('@')[0].replace('!', '')
 
diff --git a/outbox.py b/outbox.py
index f963692b1..821f78b33 100644
--- a/outbox.py
+++ b/outbox.py
@@ -107,6 +107,11 @@ def _person_receive_update_outbox(base_dir: str, http_prefix: str,
         return
     domain_full = get_full_domain(domain, port)
     actor = local_actor_url(http_prefix, nickname, domain_full)
+    if not isinstance(message_json['to'], list):
+        if debug:
+            print('DEBUG: c2s actor update - to field is not a list ' +
+                  str(message_json['to']))
+        return
     if len(message_json['to']) != 1:
         if debug:
             print('DEBUG: c2s actor update - to does not contain one actor ' +
diff --git a/posts.py b/posts.py
index 0b06ac985..88152c22b 100644
--- a/posts.py
+++ b/posts.py
@@ -477,23 +477,37 @@ def _is_public_feed_post(item: {}, person_posts: {}, debug: bool) -> bool:
         if isinstance(this_item, dict):
             if this_item.get('to'):
                 is_public = False
-                for recipient in this_item['to']:
+                if isinstance(this_item['to'], list):
+                    for recipient in this_item['to']:
+                        if recipient.endswith('#Public') or \
+                           recipient == 'as:Public' or \
+                           recipient == 'Public':
+                            is_public = True
+                            break
+                elif isinstance(this_item['to'], str):
+                    recipient = this_item['to']
                     if recipient.endswith('#Public') or \
                        recipient == 'as:Public' or \
                        recipient == 'Public':
                         is_public = True
-                        break
                 if not is_public:
                     return False
         elif isinstance(this_item, str) or item_is_note:
             if item.get('to'):
                 is_public = False
-                for recipient in item['to']:
+                if isinstance(item['to'], list):
+                    for recipient in item['to']:
+                        if recipient.endswith('#Public') or \
+                           recipient == 'as:Public' or \
+                           recipient == 'Public':
+                            is_public = True
+                            break
+                elif isinstance(item['to'], str):
+                    recipient = item['to']
                     if recipient.endswith('#Public') or \
                        recipient == 'as:Public' or \
                        recipient == 'Public':
                         is_public = True
-                        break
                 if not is_public:
                     return False
     return True
@@ -1906,14 +1920,26 @@ def _post_is_addressed_to_followers(nickname: str, domain: str, port: int,
     if post_json_object['type'] != 'Update' and \
        has_object_dict(post_json_object):
         if post_json_object['object'].get('to'):
-            to_list = post_json_object['object']['to']
+            if isinstance(post_json_object['object']['to'], list):
+                to_list = post_json_object['object']['to']
+            elif isinstance(post_json_object['object']['to'], str):
+                to_list = [post_json_object['object']['to']]
         if post_json_object['object'].get('cc'):
-            cc_list = post_json_object['object']['cc']
+            if isinstance(post_json_object['object']['cc'], list):
+                cc_list = post_json_object['object']['cc']
+            elif isinstance(post_json_object['object']['cc'], str):
+                cc_list = [post_json_object['object']['cc']]
     else:
         if post_json_object.get('to'):
-            to_list = post_json_object['to']
+            if isinstance(post_json_object['to'], list):
+                to_list = post_json_object['to']
+            elif isinstance(post_json_object['to'], str):
+                to_list = [post_json_object['to']]
         if post_json_object.get('cc'):
-            cc_list = post_json_object['cc']
+            if isinstance(post_json_object['cc'], list):
+                cc_list = post_json_object['cc']
+            elif isinstance(post_json_object['cc'], str):
+                cc_list = [post_json_object['cc']]
 
     followers_url = \
         local_actor_url(http_prefix, nickname, domain_full) + '/followers'
diff --git a/utils.py b/utils.py
index c55f925ba..ebb15d026 100644
--- a/utils.py
+++ b/utils.py
@@ -2317,6 +2317,8 @@ def is_reminder(post_json_object: {}) -> bool:
         return False
     if not post_json_object['object'].get('tag'):
         return False
+    if not isinstance(post_json_object['object']['to'], list):
+        return False
     if len(post_json_object['object']['to']) != 1:
         return False
     if post_json_object['object']['to'][0] != \