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
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Zimbra Tips : How To Enable PTR/Reverse DNS Lookup for Incoming Email
Most of spam email sent from public IP who did not have PTR/Reverse DNS. What is PTR/Reverse DNS, you can
Continue readingZimbra Tips : How To Enable DKIM/DomainKeys Checking/Verify for Incoming Email
From previous article, you can configure and validate DKIM records on Zimbra which is used to increase email reputation. The configuration will increase
Continue readingZimbra 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
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