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 will reject SPF only if configured fail (-). If SPF none or SPF soft fail, email will pass and given some score. If you want to block sender did not have SPF or soft fail, ..
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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 ..
Policyd has module access control. This module can use for some aims as improving anti spam reject unlisted domain like article has been wrote before. Module access control also can use for restrict users sending to certain users/domains and this article will explain how to apply. Assume you have been install and configure policyd like the ..
Still talking about Policyd. When you access policyd webui, it’s not asking username and password. So, everyone can access policyd configuration via webui. To protect policyd webui, we can use three ways. First, we can stopping Apache service Zimbra with zmapachectl stop. Second, we can use firewall to protect and third, we can use login username and ..
Reject unlisted domain is one of many method to improve anti spam on email server, especially Zimbra mail server. On Zimbra, we can setup any IP address to listed as trusted network. IP address listed on trusted network, can sending email without authentication or prompt asking. In other words, listed ip address on trusted network can sending email ..
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