Tighten rspamd's attachment policy

src/plugins/lua/mime_types.lua

@@ -52,16 +52,10 @@ local settings = {
   },
 
   bad_extensions = {
-    bat = 2,
-    chm = 4,
-    com = 2,
     cue = 2,
     exe = 1,
-    hta = 2,
     iso = 4,
     jar = 2,
-    lnk = 4,
-    scr = 4,
     -- In contrast to HTML MIME parts, dedicated HTML attachments are considered harmful
     htm = 1,
     html = 1,
@@ -70,11 +64,21 @@ local settings = {
     -- Have you ever seen that in legit email?
     ace = 4,
     arj = 2,
+    aspx = 1,
     asx = 2,
     cab = 3,
+    dll = 4,
+    dqy = 2,
+    iqy = 2,
+    mht = 2,
+    mhtml = 2,
+    oqy = 2,
+    rqy = 2,
     sfx = 2,
+    slk = 2,
     vst = 2,
     vss = 2,
+    wim = 2,
     -- Additional bad extensions from Gmail
     ade = 4,
     adp = 4,
@@ -105,17 +109,23 @@ local settings = {
     app = 4,
     asp = 4,
     bas = 4,
+    bat = 4,
+    chm = 4,
     cnt = 4,
+    com = 4,
     csh = 4,
     diagcab = 4,
     fxp = 4,
     gadget = 4,
     grp = 4,
     hlp = 4,
     hpj = 4,
+    hta = 4,
+    htc = 4,
     inf = 4,
     its = 4,
     jnlp = 4,
+    lnk = 4,
     ksh = 4,
     mad = 4,
     maf = 4,
@@ -158,17 +168,26 @@ local settings = {
     psd1 = 4,
     psdm1 = 4,
     pst = 4,
+    pyc = 4,
+    pyo = 4,
+    pyw = 4,
+    pyz = 4,
+    pyzw = 4,
     reg = 4,
     scf = 4,
+    scr = 4,
     shs = 4,
     theme = 4,
     url = 4,
     vbp = 4,
+    vhd = 4,
+    vhdx = 4,
     vsmacros = 4,
     vsw = 4,
     webpnp = 4,
     website = 4,
     ws = 4,
+    wsf = 4,
     xbap = 4,
     xll = 4,
     xnk = 4,