diff --git a/inventory/group_vars/mailman b/inventory/group_vars/mailman
index 1fd616fceb..cbf152071e 100644
--- a/inventory/group_vars/mailman
+++ b/inventory/group_vars/mailman
@@ -1,8 +1,8 @@
 ---
 # common items for the releng-* boxes
 lvm_size: 250000
-mem_size: 4096
-num_cpus: 2
+mem_size: 16384
+num_cpus: 4
 # for systems that do not match the above - specify the same parameter in
 # the host_vars/$hostname file