When you configure disclaimer on Zimbra, disclaimer will display on every email that you sent, reply or forward. Yes, you can configure disclaimer only for outgoing email. However, If you correspond with the same person, disclaimer still display on every email that you sent, reply or forward. For some users, the disclaimer annoying enough. You can disable disclaimer when ..
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By default, Zimbra have limitation to display account on Zimbra Admin up to 5000 users. I have some clients who have more than 5000 users and use multi server installation schema. You will see “The number of results to be displayed is over the limit. Please use search to refine the results” on Zimbra Admin | Manage ..
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, ..
Most of spam email sent from public IP who did not have PTR/Reverse DNS. What is PTR/Reverse DNS, you can find more information from Wikipedia 😀 : https://en.wikipedia.org/wiki/Reverse_DNS_lookup If you have Zimbra and want to enable PTR/Reverse DNS lookup for incoming, you can perform the following command su – zimbra zmprov mcf +zimbraMtaRestriction "reject_unknown_client_hostname" Please wait ..
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