[Rspamd] Scan the whole message to be able to trigger Sanesecurity rules

[Rspamd] Increase add_header and greylist score

data/conf/rspamd/local.d/antivirus.conf

@@ -1,5 +1,8 @@
 clamav {
-  scan_mime_parts = true;
+  # Scan whole message
+  scan_mime_parts = false;
+  #scan_text_mime = true;
+  #scan_image_mime = true;
   symbol = "CLAM_VIRUS";
   type = "clamav";
   log_clean = true;