疑似Oday
Ensure that Google Cloud VPC network firewall rules do not allow unrestricted access (0.0.0.0/0 on TCP port 25). Restrict access to trusted IP addresses or ranges to reduce the risk of security threats for the SMTP server instances associated with these firewall rules.
id: gcloud-unrestricted-smtp-access
info:
name: Check for Unrestricted SMTP Access
author: prin
...