+=head1 CONFIGURATION
+
+=over 8
+
+=item publicinbox.indexMaxSize
+
+Prevents indexing of messages larger than the specified size
+value. A single suffix modifier of C<k>, C<m> or C<g> is
+supported, thus the value of C<1m> to prevents indexing of
+messages larger than one megabyte.
+
+This is useful for avoiding memory exhaustion in mirrors.
+
+Default: none
+
+=back
+