To block all emails from a specific domain in Zimbra, run the following commands as user zimbra (su – zimbra). To block a specific email address, run How to unblock If you have blocked a domain or email address and want to unblock, you can use Example Back to zimbra
When you are using the Zimbra mail server behind NAT with Split DNS, you need to disable dnscache service. To view all enabled/installed services, run zmprov gs `zmhostname` zimbraServiceEnabled zimbraServiceInstalled Example zimbra@mail:~$ zmprov gs `zmhostname` zimbraServiceEnabled zimbraServiceInstalled # name mail.serverok.in zimbraServiceEnabled: amavis zimbraServiceEnabled: antivirus zimbraServiceEnabled: antispam zimbraServiceEnabled: opendkim zimbraServiceEnabled: logger zimbraServiceEnabled: ldap zimbraServiceEnabled: mta zimbraServiceEnabled: … Read more
When you install Zimbra on a server behind NAT, your public IP is not configured in the server, instead, it gets routed to the server using NAT gateway. Zimbra wants the IP address of your MX record present in the server. To solve this problem, we can use Split DNS. When you check the IP … Read more
To find the Zimbra version, log in to the server using SSH, then run the following commands. Switch to the user “zimbra” Run the command zmcontrol -v, which will display the version of Zimbra you are using. Example Using Zimbra Admin Login to the Zimbra Admin area at https://your-domain-here:7071/zimbraAdmin/ On the Dashboard, you will see … Read more
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 under monitor tab of Zimbra Admin. To fix, run su – zimbra zmprov ms `zmhostname` zimbraReverseProxySSLToUpstreamEnabled FALSE zmprov ms `zmhostname` zimbraMailMode both zmprov ms `zmhostname` zimbraReverseProxyMailMode both ./libexec/zmproxyconfig -e -w -o -a 8080:80:8443:443 … Read more
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 firewall-cmd –zone=public –permanent –add-service=https firewall-cmd –zone=public –permanent –add-service=ssh firewall-cmd –zone=public –permanent –add-port=110/tcp firewall-cmd –zone=public –permanent –add-port=11211/tcp firewall-cmd –zone=public –permanent –add-port=143/tcp firewall-cmd –zone=public –permanent –add-port=25/tcp firewall-cmd –zone=public –permanent –add-port=443/tcp firewall-cmd –zone=public –permanent –add-port=465/tcp firewall-cmd … Read more
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 HTTP to redirect to HTTPS, login to server as root, switch to user zimbra su – zimbra Run zmprov ms SERVER_HOSTNAME_HERE zimbraReverseProxyMailMode redirect Wait few minutes, HTTP link will redirect to HTTPS. [root@correo … Read more
To install SSL certificate for Zimbra Mail Server, login to server, switch to user zimbra Now create file commercial.key, paste your Private key. In commercial.crt, paste your SSL certificate. Create commercial_ca.crt with content of your ca-bundle file. Verify SSL cerificate If SSL verified sucessfully, you can install it with command To make SSL active, you … Read more
On installing SSL on the Zimbra mail server, i get the following error This was due to SSL cert chain. The ca-bundle file they provided did not work with Zimbra. This is due to some issue with the order in which CA Certificate files are placed. Here is Zimba documentation related to this issue https://wiki.zimbra.com/wiki/Fix_depth_lookup:unable_to_get_issuer_certificate … Read more
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 version is 8.8.15 GA Release. System Requirments Zimbra recommends 8 GB of RAM. For detailed system requirements, see Zimbra System Requirements I have installed it on servers with 4 GB RAM without any … Read more
zmcontrol is CLI tool for managing Zimbra Mail Server. To use, zmcontrol, you need to become user zimbra. su – zimbra zmcontrol status To stop zimbraAdmin, run zmcontrol stop zimbraAdmin Example [zimbra@mail ~]$ zmcontrol stop zimbraAdmin Host mail.serverok.in Stopping zmconfigd…Done. Stopping zimlet webapp…Done. Stopping zimbraAdmin webapp…Done. Stopping zimbra webapp…Done. Stopping service webapp…Done. Stopping stats…Done. Stopping … Read more
Install Open Source Zimbra Mail Server Reset Zimbra Administrator Password zmcontrol CLI for Zimbra Mail Server Zimbra Generate DKIM Key Zimbra Unable to validate certificate chain Install SSL Certificate on Zimbra mail server Zimbra redirect webmail http to https Zimbra Mail Server CentOS firewall settings Zimbra webmail not working on port 80/443 How to find … Read more