Zimbra Installation at CentOS 7

1.  vi /etc/hosts
and set hostname

2. Allow iptables to by-pass all zimbra ports

service iptables stop


3.  vi /etc/sysconfig/selinux

SELINUX=disabled


4. Stop any MTA services installed in the server

[root@centos7 ~]# systemctl stop postfix
[root@centos7 ~]# systemctl disable postfix
[root@centos7 ~]# systemctl stop sendmail
[root@centos7 ~]# systemctl disable sendmail

5.Update the OS

[root@centos7 ~]# yum update -y
6.Install the required packages and libraries by issuing the following command :

[root@centos7 ~]# yum install perl perl-core ntpl nmap sudo libidn gmp libaio libstdc++ unzip sysstat sqlite -y


wget https://files.zimbra.com/downloads/8.6.0_GA/zcs-8.6.0_GA_1153.RHEL7_64.20141215151110.tgz

tar xzf zcs-8.6.0_GA_1153.RHEL7_64.20141215151110.tgz


cd zcs-8.6.0_GA_1153.RHEL7_64.20141215151110


./install.sh --platform-override
You can see the following screen when starting the script.

./install.sh --platform-override



#### Finally
su - zimbra
[zimbra@mail ~]$  zmcontrol start
[zimbra@mail ~]$  zmcontrol status

Access admin panel via browser :

https://<your_zimbra_domain.com>:7071


Source: https://www.unixmen.com/install-zimbra-collaboration-suite-8-6-0-centos-7/


------------------------------------------------------------------
Zimbra Domain Block / Restrict  and troubleshooting
-----------------------------------------------------------------

*** Check Mail sender Public IP from LINUX:
root# dig TXT +short o-o.myaddr.l.google.com @ns1.google.com
       //(check either PUBLIC IP is right or wrong)

*** Check Mailq and Delete if needed
root# /opt/zimbra/common/sbin/postsuper -d ALL
root# su - zimbra
[zimbra@mail ~]$ mailq
*** Enable SPAM FILTER ****
[zimbra@mail ~]$ zmlocalconfig -e amavis_dspam_enabled=true


*** Modify "smtpd_sender_restrictions". We are adding a check before allowing a normal smtp connection. Allowing hosts in mynetwork, then allowing sasl authenticated too. Then a check for local domain address.

[zimbra@mail ~]$ postconf mynetworks
[zimbra@mail ~]$ zmprov ms mail.tayabkna.com zimbraMtaMyNetworks '127.0.0.0/8  192.168.10.50/32'
[zimbra@mail ~]$ postfix reload

Bellow commands For Zimbra 8.5 and Above versions.....

[zimbra@mail ~]$ zmprov mcf zimbraMtaSmtpdRejectUnlistedRecipient yes
[zimbra@mail ~]$ zmprov mcf zimbraMtaSmtpdRejectUnlistedSender yes   
[zimbra@mail ~]$ zmmtactl restart
[zimbra@mail ~]$ zmconfigdctl restart 

For Zimbra 8.0.0 versions.... use bellow commands
vi /opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf
check_sender_access hash:/opt/zimbra/conf/domainrestrict

#########################

vi /opt/zimbra/conf/domainrestrict
tayabkhan.com ACCEPT
mezan.net     REJECT Not-Permitted
@             REJECT You-Are-Not-Permitted

postmap  /opt/zimbra/conf/domainrestrict

 zmmtactl stop
 zmmtactl start

#####################################