diff --git a/inventory/host_vars/dedicatedsolutions01.fedoraproject.org b/inventory/host_vars/dedicatedsolutions01.fedoraproject.org
index 8ff0ebd623..4b564ba836 100644
--- a/inventory/host_vars/dedicatedsolutions01.fedoraproject.org
+++ b/inventory/host_vars/dedicatedsolutions01.fedoraproject.org
@@ -42,3 +42,5 @@ nrpe_procs_warn: 900
 postfix_group: vpn
 virthost: true
 vpn: true
+zabbix_macros:
+  'VFS.DEV.WRITE.AWAIT.WARN': 100
diff --git a/inventory/host_vars/mailman01.rdu3.fedoraproject.org b/inventory/host_vars/mailman01.rdu3.fedoraproject.org
index f152aeadcf..6627c7738f 100644
--- a/inventory/host_vars/mailman01.rdu3.fedoraproject.org
+++ b/inventory/host_vars/mailman01.rdu3.fedoraproject.org
@@ -12,3 +12,7 @@ sar_script_user: mailman
 vmhost: vmhost-x86-05.rdu3.fedoraproject.org
 volgroup: /dev/vg_guests
 num_cpus: 8
+zabbix_macros:
+  # 90% of the 250000 factor between the 10Mb/s Zabbix thinks
+  # it has, and the 25Gb/s the vmhost actually has
+  'IF.UTIL.MAX:"tun0"': 225000