Social Network For Security Executives: Network, Learn & Collaborate
Step 1: Collect all IP addresses that are used to send email
The Sender Policy Framework (SPF) gives the ability to authenticate your email and to specify which IP addresses are allowed to send email on behalf of the specific domain.
In order to successfully implement SPF you first need to identify which mail servers are used to send email for your domain. These mail servers can be any sending organization, you should think of your Email Service Provider,…Continue