Usually, i am configure spf to my server for outgoing purpose. The spf records are defined in public dns use txt records. But, how to enable spf checking if there connection to my server? The following is step by step how to enable spf checking for incoming connection. You need to enable cbpolicyd as in the following ..
For increase reputation of email server, we could adding SPF records on public DNS. What is SPF record? as information from this link : https://support.google.com/a/answer/33786?hl=en, an SPF record is a type of Domain Name Service (DNS) record that identifies which mail servers are permitted to send email on behalf of your domain. The purpose of an SPF ..