Category: Zimbra

ZIMBRA: Enable plain text authentication

  This post explains how to enable plain text authentication in Zimbra mail server, it also explains the necessary changes that needs to be made on the proxy service 1. Enable plain text authentication on Zimbra IMAP front-end by going to Configure >> Global Settings >> IMAP check the “Enable Clear Text Login” as below […]

Installing Zimbra 8.6 on CentOS 7

1. Setup hostname 2. Add entry in hosts file 3. Install dependencies yum install nmap-ncat perl perl-core sysstat 4. Download Zimbra installation file for CentOS 7 wget 5. Uncompress the file tar -xvf 6. Enter the Zimbra installation directory cd zcs-8.6.0_GA_1153.RHEL7_64.20141215151110 7. Start the installation ./ 8. Agree Software License Agreement (Type Y […]

Zimbra: Assign a dedicated Outgoing SMTP IP for a domain

Zimbra Outgoing SMTP IP per Domain   1. Add the following line in “/opt/zimbra/postfix/conf/”   sender_dependent_default_transport_maps = regexp:/opt/zimbra/postfix/conf/sdd_transport_maps.regexp   2. Create the file “/opt/zimbra/postfix/conf/sdd_transport_maps.regexp” and add the domains as below   /@example\.com$/ example_com:   3. Once done edit “/opt/zimbra/postfix/conf/” and add the below code   example_com unix – – n – – smtp -o smtp_bind_address=<dedicated […]

Online System/Network Admin Tools

  1. MXTOOLBOX: One of the most popular website to check MX Records, Blacklist Status, SPF, DKIM, DNS, OPEN Ports etc … website: 2. WHATISMYDNS: Want to check the global propogation status of your DNS records ? WHATISMYDNS is the right online tool website: 3. HOST-TRACKER: Want to know whether your website is […]

Disable IPV6 on CentOS 6.x servers

1. Edit /etc/sysctl.conf  and add the following line   net.ipv6.conf.all.disable_ipv6 = 1   2. Edit /etc/sysconfig/network and add the following line   NETWORKING_IPV6=no   3. Edit /etc/sysconfig/network-scripts/ifcfg-eth0 and add the following line   IPV6INIT=no   4. Stop iptables6 service   service iptables6 stop   5. Disable iptables6 service   chkconfig ip6tables –level 345 off   […]

Run Zimbra on Both HTTP and HTTPS

  1. Disable ProxySSLUpstream   zmprov ms `zmhostname` zimbraReverseProxySSLToUpstreamEnabled FALSE   2. Reconfigure Nginx   /opt/zimbra/libexec/zmproxyconfig -e -w -o -a 8080:80:8443:443 -x both -H `zmhostname`   3. Configure Zimbra to run both on HTTPS and HTTP   zmtlsctl both zmprov ms `zmhostname` zimbraReverseProxyMailMode both zmprov ms `zmhostname` zimbraMailMode both   4. Restart Zimbra service   […] © 2016