Before configure this guidance, please make sure you’ve configured SPF checking from this link : https://imanudin.net/2016/03/11/zimbra-tips-how-to-enable-spf-checking-for-incoming-connection/. When you’ve done, by default
Read moreTag: SPF
Zimbra Tips : How To Enable SPF Checking for Incoming Connection
Usually, i am configure spf to my server for outgoing purpose. The spf records are defined in public dns use txt
Read moreHow To Configure SPF (Sender Policy Framework) Records for Email Server
For increase reputation of email server, we could adding SPF records on public DNS. What is SPF record? as information
Read more