diff --git a/nagios3.yaml b/nagios3.yaml
index 6d86ebbf7b..4f6a42228a 100644
--- a/nagios3.yaml
+++ b/nagios3.yaml
@@ -47,6 +47,18 @@ Parameters:
     Type: String
     Default: |
       -----  BEGIN PlaceHolder...
+  PostfixMailHostname:
+    Description: Hostname for postfix..
+    Type: String
+    Default: nagios3-nagios3
+  PostfixMailDomain:
+    Description: Top level domain for postfix.
+    Type: String
+    Default: novalocal
+  PostfixDelayWarningTime:
+    Description: Amount of time to Delay warnnings.
+    Type: String
+    Default: 4h
 Resources:
   nagios3:
     Metadata:
@@ -69,6 +81,13 @@ Resources:
           Ref: NovaOsTenantName
         initial_network_split_key:
           Ref: InitialIpSplitKey
+      postfix:
+        mailhostname:
+          Ref: PostfixMailHostname
+        maildomain:
+          Ref: PostfixMailDomain
+        delay_warning_time:
+          Ref: PostfixDelayWarningTime
     Type: AWS::EC2::Instance
     Properties:
       KeyName:
@@ -78,4 +97,4 @@ Resources:
       InstanceType: {Ref: InstanceType}
 Outputs:
     Nagios3Host:
-        Fn::GetAtt: [ nagios3 , PrivateIp ]
\ No newline at end of file
+        Fn::GetAtt: [ nagios3 , PrivateIp ]