---
names:
  full: "Azure VM Scale Set Instance allows public access to SMTP port"
  contextual: "Instance allows public access to SMTP port"
description: >
  Ensure Azure VM Scale Set Instances do not allow unrestricted public access to the 
  SMTP port 25.
categories:
  - "SECURITY"
type: "COMPLIANCE_POLICY"
frameworkMappings:
  - "/frameworks/iso-iec-27001-2013/13/01/01"
  - "/frameworks/pci-dss-v4.0.1/01/03/01"
  - "/frameworks/pci-dss-v4.0.1/01/03/02"
  - "/frameworks/cloudaware/resource-security/network-exposure"
  - "/frameworks/iso-iec-27001-2013/09/01/02"
  - "/frameworks/soc-2/cc6/01/07"
  - "/frameworks/soc-2/cc6/06/01"
similarPolicies:
  internal:
    - dec-x-376cc6e5