How to block a domain in Zimbra
To block all emails from a specific domain in Zimbra, run the following commands as user zimbra (su – zimbra). To block…
Zimbra
How to disable Zimbra dnscache service
When you are using the Zimbra mail server behind NAT with Split DNS, you need to disable dnscache service. To view all…
How to Zimbra Split DNS with dnsmasq
When you install Zimbra on a server behind NAT, your public IP is not configured in the server, instead, it gets routed…
How to find Zimbra version
To find the Zimbra version, log in to the server using SSH, then run the following commands. Switch to the user “zimbra”…
Zimbra webmail not working on port 80/443
On Zimbra mail server, webmail stopped working on Port 80/443. Admin interface worked properly on url https://hostname:7071/. There is no errors displayed…
Zimbra Mail Server CentOS firewall settings
On CentOS 7 server with firewalld running, used following command to open ports used by Zimbra Mail Server. firewall-cmd –zone=public –permanent –add-service=http…
Zimbra redirect webmail http to https
After Zimbra mail server installed, webmail work on url https://SERVER-HOSTNAME-HERE/ If you access webmail with out HTTPS, it won’t work. To set…
Install SSL Certificate on Zimbra mail server
To install SSL certificate for Zimbra Mail Server, login to server, switch to user zimbra Now create file commercial.key, paste your Private…
Zimbra Unable to validate certificate chain
On installing SSL on the Zimbra mail server, i get the following error This was due to SSL cert chain. The ca-bundle…
Install Open Source Zimbra Mail Server
To install Zimbra, Download the latest version of “Zimbra Collaboration Open Source” form https://www.zimbra.com/downloads/ At the time of this post, the latest…
zmcontrol CLI for Zimbra Mail Server
zmcontrol is CLI tool for managing Zimbra Mail Server. To use, zmcontrol, you need to become user zimbra. su – zimbra zmcontrol…
Zimbra
Install Open Source Zimbra Mail Server Reset Zimbra Administrator Password zmcontrol CLI for Zimbra Mail Server Zimbra Generate DKIM Key Zimbra Unable…