Under multithreaded Apache MPMs mod_cgid is preferred

ansible/roles/apache/templates/apache2.conf

@@ -45,7 +45,9 @@ SSLSessionTickets   off
 
 # Mailman
 LoadModule alias_module /usr/lib/apache2/modules/mod_alias.so
-LoadModule cgi_module /usr/lib/apache2/modules/mod_cgi.so
+# preferred under multithreaded MPMs:
+LoadModule cgid_module /usr/lib/apache2/modules/mod_cgid.so
+ScriptSock ${APACHE_RUN_DIR}/cgisock
 # the public archive links rely on:
 LoadModule dir_module /usr/lib/apache2/modules/mod_dir.so