From previous article, you can configure and validate DKIM records on Zimbra which is used to increase email reputation. The configuration will increase reputation for outgoing email. But, how to enable DKIM/DomainKeys checking for incoming connection? By enable DKIM/DomainKeys checking, you can reject every incoming email who did not have DKIM/DomainKeys. By default, Zimbra only configure OpenDKIM as ..

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If you have Zimbra and running on VMware, you can configure automatic restart when one or some services not running/stopped with VMware HA Script. You can find VMware HA Script from here : https://wiki.zimbra.com/wiki/VMware_HA_script_in_Zimbra_Collaboration If you have Zimbra and not running on VMware and want to automatic restart when one or some services not running/stopped, you ..

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If you have disclaimer on your Zimbra and want to insert picture (like company logo), i hope this guidance can help you to do that. This guidance only work on html mode – Insert picture into  /opt/zimbra/jetty/webapps/zimbra/skins/_base/logos/ folder. For example, the name of pictures is logo-perusahaan.png – Create disclaimer file vi /tmp/disclaimer.html fill with the following example <html><body><div> <br> <img src=”https://mail.imanudin.net/skins/_base/logos/logo-perusahaan.png” ..

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If you get message “timed out while sending message body” on queue, please try to decrease MTU value on network interface. Default value of MTU are 1500. You can decrease into 1460 or below. # Change MTU value temporary Assuming your network interface are eth0 ifconfig eth0 mtu 1460 Please try requeue your email and ..

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