diff --git a/inbox.py b/inbox.py
index 58c55f902..6f2ba0b06 100644
--- a/inbox.py
+++ b/inbox.py
@@ -3179,7 +3179,9 @@ def _valid_post_content(base_dir: str, nickname: str, domain: str,
                           'allow comments: ' + original_post_id)
                     return False
     if invalid_ciphertext(message_json['object']['content']):
-        print('REJECT: malformed ciphertext in content')
+        print('REJECT: malformed ciphertext in content ' +
+              message_json['object']['id'] + ' ' +
+              message_json['object']['content'])
         return False
     if debug:
         print('ACCEPT: post content is valid')