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in the file /etc/selinux/config
need replace the value for option SELINUX from:

SELINUX=enforcing

to:

SELINUX=disabled

And then reboot the server.

mkdir -pv /reports;cxs --qcreate --quarantine /home/quarantine;cxs -U;cxs --logfile /var/log/cxs.log --exploitscan --virusscan --sversionscan --bayes -I /etc/cxs/cxs.ignore -Q /home/quarantine --options mMOLfSGchexdnwZRD --voptions mfuhexT --qoptions Mv -Z --www --summary --html --ssl -C /var/clamd --nofallback -T 5 --allusers --quiet --report /reports/full_malware_scan_`date +%d.%m.%Y`.txt

we can do it in 2 simple steps:

1. need to install additional cPanel repository:

yum install -y ea4-experimental

2. now we can install memcache and memcached for all php versions:
for i in `ls -1 /opt/cpanel/|grep php`;do yum install -y "$i"-php-memcached "$i"-php-memcache;done

find the issue:
named-checkzone somedomain.com /var/named/somedomain.com.db
zone somedomain.com/IN: NS 'ns1.somedomain.com' has no address records (A or AAAA)
zone somedomain.com/IN: NS 'ns2.somedomain.com' has no address records (A or AAAA)
zone somedomain.com/IN: not loaded due to errors.

when it fixed:
named-checkzone somedomain.com /var/named/somedomain.com.db
zone somedomain.com/IN: loaded serial 2020021308
OK

I have faced the issue on one of my servers where I am using software RAID5.
One of the drives has died, so we replace it with a new one.

However, after that, we need to put it to a raid and recover the normal work, so:

1. We need to create exactly the same structure on the new drive that we are using for the rest of them:

sfdisk -d /dev/sda | sfdisk /dev/sdc
Where SDA is an old one inside the RAID and SDC is a new one (we are copy structure to it)

2. Also, the second issue was discovered – one of the arrays (MD0) is going to an inactive state. To fix it need to do the following:

2.1 stop it
mdadm --stop /dev/md0

2.2 assemble them once again
mdadm --assemble --force /dev/md0 /dev/sd[abd]1

3. readd the new HDD to a RAID array:
mdadm --manage /dev/md0 --add /dev/sdc1
mdadm --manage /dev/md1 --add /dev/sdc2
mdadm --manage /dev/md2 --add /dev/sdc3

Note: Better to start from the small arrays because it can be synced only in a step by step mode. So we can sync small arrays quickly.

To fix it:
cd /var/spool/exim/db;rm -fv retry retry.lockfile retry.lockfile wait-remote_smtp.lockfile;service exim restart; cd ~

A lot of the issue and issues with the spam can happen if the user can send the emails without authorization. In order to prevent the issue, we can block them:

In the end of acl_check_not_smtp, before accept section need to add the following code:
#############################
accept condition = ${if eq{$originator_uid}{0}}
drop message = Local users can't send mail
#############################

It will prevent all emails except the emails from the root.

The second way, you can limit it, via the following lines:
#############################
deny message = Sender rate overlimit - $sender_rate / $sender_rate_period
ratelimit = 10 / 1h / strict
#############################

It means that only 10 emails can be sent via users or web scripts without authorization in 1 hour.

But only 1 way can be used, it is not possible to mix it.

1. need to locate where the SSL for Exim should to be:
grep "tls_certificate\|tls_privatekey" /etc/exim/exim.conf
tls_certificate = /etc/exim/ssl/exim.crt
tls_privatekey = /etc/exim/ssl/exim.key

2. now we can update the SSL with valid certificate for our hostname:
file /etc/exim/ssl/exim.key should store private key for your domain
file /etc/exim/ssl/exim.crt should store certificate + ca-bundle for your domain

3.Now time to update Dovecot with the following lines or replace them:
ssl_cert =

In the file /libraries/joomla/database/database.php
Need to find the string $this->_table_prefix = $table_prefix; and put the following code after it:

@mysql_query("SET NAMES 'cp1251'", $this->_resource);
@mysql_query( "set session character_set_server=cp1251", $this->_resource );
@mysql_query( "set session character_set_database=cp1251", $this->_resource );
@mysql_query( "set session character_set_connection=cp1251", $this->_resource );
@mysql_query( "set session character_set_results=cp1251", $this->_resource );
@mysql_query( "set session character_set_client=cp1251", $this->_resource );

or, in the case with UTF-8:

@mysql_query("SET NAMES 'utf8'", $this->_resource);
@mysql_query( "set session character_set_server=utf8", $this->_resource );
@mysql_query( "set session character_set_database=utf8", $this->_resource );
@mysql_query( "set session character_set_connection=utf8", $this->_resource );
@mysql_query( "set session character_set_results=utf8", $this->_resource );
@mysql_query( "set session character_set_client=utf8", $this->_resource );

The default configs are stored here:
/usr/local/mgr5/etc/templates/default/

If you want to build your own one, just copy it to one level up, to

/usr/local/mgr5/etc/templates/

for example cp -pv /usr/local/mgr5/etc/templates/default/nginx-vhosts-ssl.template /usr/local/mgr5/etc/templates/

More details and how-to guides on the original site