It is AWS best practice to remove entries in security group which allows SMTP access from public IP to reduce possibility of breach. Allowing unrestricted SMTP access can increase threats like hacking, spamming, Shellshock attacks, denial-of-service (DoS) attacks.
Use this to initiate a workflow based on time, events or HTTP calls.
Select resources on which you want to work on.
Enter parameters to filter resources in the workflow.
Use this to get approval from stakeholder to continue the workflow.
Select action to be done on resources in the workflow.