TôI NhậN đượC LỗI 550, 553 HoặC LỗI KhôNg đượC PhéP ChuyểN TiếP Khi GửI Thư Email

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The VPS servers will impress you with its ample guaranteed RAM & CPU resources as well as its speedy, high-performance SSDs – all at a very moderate price. Naturally, a generous amount of included traffic and a swift connection are included to ensure optimal availability. Valuable features like the snapshot function, 24-hour vps monitoring, and the reset function make this giảm giá khuyến mãi a complete package.

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RAM 2 GB

STORAGE 64 GB SSD

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STORAGE 40 GB NVMe

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không tính phí

miễn phí

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30,00€/month

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Most frequently asked questions

How to install the php-mcrypt module on a Plesk vps

Question

How khổng lồ install the php-mcrypt module on a Plesk server?

Answer

Notes: The solution in this article is applicable to system PHP versions (Up khổng lồ 7.1) supplied by OS vendor.Plesk PHP handlers up to 7.1 are shipped with the mcrypt module by default. PHP handlers provided by Plesk can be installed via Plesk Installer and selected at Domains > example.com > PHP settings.The mcrypt module is deprecated since PHP 7.1 và is moved out from bộ vi xử lý core into PECL: PHP RFC: Deprecate (then Remove) Mcrypt PHP: Deprecated features in PHP 7.1.x

Connect to lớn a Plesk server via SSH.

Install the module:

on CentOS/RHEL-based distributions:

The php-mcrypt package is available in RPMforge and EPEL repositories. Add the repository khổng lồ the server & install the package using the yum utility. In this example, we are using the EPEL repo:

# yum install epel-release# yum install php-mcrypt

on Debian/Ubuntu-based distributions:

Find the system PHP version:

# php -v

Run the command:

if PHP 5.x version is installed:

# apt-get install php5-mcrypt

if PHP 7.x version is installed:

# apt-get install php-mcrypt

To make the mcrypt extension available for existing websites, update PHP settings for all domains with the command:

# /usr/local/psa/bin/php_settings -u

This extension will also appear in Plesk at Tools & Settings > PHP Settings >  by OS vendor.


How lớn change the location for Plesk backup files on a Linux server?

By default, all backup data is stored in the directory /var/lib/psa/dumps.

To change the default backup location, follow these steps:

Connect to lớn a Plesk hệ thống via SSH.

Create a new directory for backups. In these example, we will use /plesk_backups:

# mkdir /plesk_backups

Set necessary ownership for the created directory:

# chown psaadm:psaadm /plesk_backups

Modify the backup location in the Plesk configuration file /etc/psa/psa.conf:

4.1. Mở cửa the file /etc/psa/psa.conf in a text editor (for example, "vi" editor).

4.2. Change the value of DUMP_D to lớn the created directory from step 2:

# Backups directoryDUMP_D /plesk_backups

4.3. Save the changes & close the file.

4.4. Verify that the directory has been changed:

# cát /etc/psa/psa.conf | grep -w DUMP_DDUMP_D /plesk_backups

Move all backup data & the hidden .discovered directory from the old location to lớn new:

# mv /var/lib/psa/dumps/* /plesk_backups/# mv /var/lib/psa/dumps/.discovered/ /plesk_backups/

Restart the "sw-cp-server" service:

# service sw-cp-server restart

From now all backup files will be stored in the directory /plesk_backups.
Configuring FTP Passive Mode to Plesk

By default, Plesk allows only active FTP connections. This may result in customers being unable to lớn connect to the vps via FTP. Lớn avoid this, we recommend enabling passive FTP. This topic explains how to lớn enable passive FTP mode in Plesk for Linux.

To enable passive FTP mode in Plesk for Linux:

Log in lớn your server via SSH as the root user.Create the /etc/proftpd.d/55-passive-ports.conf file, showroom the following lines khổng lồ it, and then save the changes:

PassivePorts 49152 65535

Run the following command:

systemctl restart xinetd

Now your Plesk server accepts passive FTP connections. If you have installed the Plesk Firewall và switched on its default configuration, you need to add a firewall rule allowing passive FTP:

Direction: IncomingAction: AllowPorts: TCP 49152-65535Sources: (any host)

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How khổng lồ install APCu module on Plesk server ?

Connect to the vps via SSH.

Install required development packages:

For .deb-based OS (Ubuntu, Debian):

# apt install plesk-php70-dev zlib1g-dev gcc

For .rpm-based OS (CentOS, RHEL, CloudLinux):

# yum install plesk-php70-devel zlib-devel gcc

Note: As an example, Plesk PHP 7.0 development package is installed. For a different version of PHP change php70 to the required version, for instance, php56

Install APCu module:

For Plesk PHP 7.x:

# /opt/plesk/php/7.x/bin/pecl install apcu

For Plesk PHP 5.x:

# /opt/plesk/php/5.x/bin/pecl install apcu-4.0.11

Enable APCu in PHP configuration:

# echo "extension=apcu.so" > /opt/plesk/php/7.0/etc/php.d/apcu.ini

Restart PHP service và refresh PHP handlers information:

# service plesk-php70-fpm restart

# plesk bin php_handler --reread

Verify that the module is loaded and is working:

# /opt/plesk/php/7.0/bin/php -i | grep apc.enabledapc.enabled => On => On


How lớn enable the Apache hệ thống statistics on a Plesk server

Connect khổng lồ a Plesk vps via SSH.

Check if "status_module" is loaded:

for CentOS/RHEL-based distributions:

# httpd -M | grep statusstatus_module (shared)

for Debian/Ubuntu-based distributions:

# apache2ctl -M | grep statusstatus_module (shared)

If the output is empty, enable the "status" module in Plesk at Tools & Settings > Apache web Server.

Find out Apache version:

for CentOS/RHEL-based distributions:

# httpd -v | grep version

for Debian/Ubuntu-based distributions:

# apache2 -v | grep version

To make status reports visible to lớn your IP address (from which you access this page in a browser) và localhost, showroom the below code to the Apache configuration tệp tin (create a new file, if there is no):

CentOS/RHEL-based distributions: CentOS 7: /etc/httpd/conf.modules.d/status.conf CentOS 6: /etc/httpd/conf.d/status.conf

Debian/Ubuntu-based distributions: /etc/apache2/mods-enabled/status.conf

for Apache 2.2:

for Apache 2.4:

Note: If "mod_status" is loaded into the server, its handler capability will be available in all configuration files, including per-directory files (for example, .htaccess). This may have security-related ramifications for your website.

Restart Apache:

for CentOS/RHEL-based distributions:

# service httpd restart

for Debian/Ubuntu-based distributions:

# service apache2 restart

Server statistics will now be available at http://your.server.ip.address/server-status


Installing ConfigServer Security & Firewall (CSF)

Config hệ thống Firewall (CSF) is a Stateful Packet Inspection (SPI) firewall, Login/Intrusion Detection & Security application for Linux servers.It"s is a security tool that can protect your hệ thống against attacks, such as brute force, & improve server security.

This application will work as a WHM plugin and is free. Follow these instructions khổng lồ complete a basic CSF installation:

Configure CSF: Login khổng lồ your server via WHM as root và go to lớn the bottom left menu. In the Plugins section, go to ConfigServer Security Firewall.

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How lớn manage mailbox form size in web Admin edition?

It is not possible to manage mailbox size via Plesk user interface in web Admin edition.

The only way to lớn manage it is through command-line with administrator privileges.

Examples (both for Linux & Windows):

set quota khổng lồ 100M:

# plesk bin subscription_settings --update example.com -mbox_quota 100M

Set the mailbox form size to the mặc định value:

Note: default value for subscription is inherited from its service plan

# plesk bin subscription_settings --update example.com -mbox_quota -1


How khổng lồ enable/disable SELinux on a hệ thống

Connect to lớn a server via SSH.

Open the /etc/selinux/config file in any text editor. In this example, we are using the vi utility:

# vi /etc/selinux/config

Change the SELINUX value to:

disabled to completely turn off SELinux on the server:

SELINUX=disabled

permissive to make SELinux print warnings instead of enforce security policy:

SELINUX=permissive

enforcing to make SELinux security policy enforced:

SELINUX=enforcing

Save the changes and close the file.

Note: A hệ thống restart is required khổng lồ apply these changes.

Check the permanent status of SELinux:

# sestatus | grep "Mode from config file"Mode from config file: permissive


How lớn upgrade MariaDB 5.5 khổng lồ 10.0/10.1/10.2 on Centos 7

 

This article provides instructions for upgrading MariaDB 5.5 khổng lồ 10.0/10.1/10.2 on Linux.

Xem thêm: Tải Phần Mềm Logo Về Máy Tính, Download Microsoft Windows Logo (Mswlogo)

By default, CentOS 7 is shipped with MariaDB 5.5. MariaDB 10.x version is a drop-in replacement for MySQL 5.5-5.7.

For security reasons, create a database dump of all databases with the following command:

# MYSQL_PWD=`cat /etc/psa/.psa.shadow` mysqldump -u admin --all-databases --routines --triggers > /tmp/all-databases.sql

Stop MariaDB:

# service mariadb stop

Remove additional packages like mariadb-bench:

# rpm -e --nodeps mariadb-bench

For security reasons, copy the database directory in a separate folder:

# cp -a /var/lib/mysql/ /var/lib/mysql_backup

Check if the mysql-server package is already installed:

# rpm -q --whatprovides mysql-server

If it is installed & the command above gives output, remove using the following command:

# rpm -e --nodeps `rpm -q --whatprovides mysql-server`

Configure MariaDB repository: mở cửa the Setting MariaDB repositories page, select your OS distro, release and a desired MariaDB version. Once done, the configuration that should be added khổng lồ the /etc/yum.repos.d/MariaDB.repo tệp tin will appear.

Here is an example for MariaDB 10.2:

6.1. Open/create the MariaDB.repo tệp tin in any text editor. In this example, we are using the vi editor:

# vi /etc/yum.repos.d/MariaDB.repo

6.2. Add the content below lớn the file:

name = MariaDBbaseurl = http://yum.mariadb.org/10.2/centos7-amd64gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDBgpgcheck=1

6.3. Save the changes and close the file.

Start an tăng cấp of MariaDB:

# yum install MariaDB-client MariaDB-server

Once the nâng cấp is finished, start MariaDB:

# service mariadb start

OR

# service mysql start

Upgrade MySQL databases:

# MYSQL_PWD=`cat /etc/psa/.psa.shadow` mysql_upgrade -uadmin

Restart mysql service:

# service mariadb restart

OR

# service mysql restart

Execute this command to lớn update the package version inside Plesk:

# plesk sbin packagemng -sdf

Note: After an upgrade lớn 10.2 version, there may appear "mysql" init script. It can be removed.

# rm /etc/init.d/mysql# systemctl daemon-reload


You must run the commands in the following steps as the root user. Therefore, you can either log in directly as the root user (which is not recommended for security reasons), or use the su or sudo commands to lớn run the commands as the root user.
Stop the MySQL vps using the appropriate command for your Linux distribution:For CentOS and Fedora, type:

service mysqld stopFor Debian & Ubuntu, type:

service mysql stopRestart the MySQL hệ thống with the —skip-grant-tables option. To do this, type the following command:

mysqld_safe --skip-grant-tables &
Make sure you type the ampersand (&) at the over of the command. This runs the command in the background & allows you khổng lồ type the commands in the following steps.Running MySQL with the —skip-grant-tables option enabled is highly insecure, & should only be done for a brief period while you reset the password. The steps below show you how lớn stop the mysqld_safe vps instance safely và start the MySQL hệ thống securely after you have reset the root password.
Log into MySQL using the following command:

mysqlAt the mysql> prompt, reset the password. To vị this, type the following command, replacing NEW-PASSWORD with the new root password:

UPDATE mysql.user set Password=PASSWORD("NEW-PASSWORD") WHERE User="root";At the mysql> prompt, type the following commands:

FLUSH PRIVILEGES;exit;Stop the MySQL server using the following command. You will be prompted to lớn enter the new MySQL root password before the MySQL hệ thống shuts down:

mysqladmin -u root -p shutdownStart the MySQL server normally. To bởi vì this, type the appropriate command for your Linux distribution:

For CentOS và Fedora, type:

service mysqld startFor Debian and Ubuntu, type:

service mysql start


To set up an tài khoản with secure connection to the mail server in an email client, follow these steps:

Make sure a valid SSL certificate is assigned lớn the mail server in Plesk at Tools & Settings > SSL/TLS Certificates and domain"s name in the certificate is the same as the name of Mail server.

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Click on the certificate name lớn find out for which domain name it was issued.

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When a valid SSL certificate is mix up for a mail server and domain name is known, during configuration in a mail client, specify incoming and outgoing mail vps name as tên miền name from step 2.

Incoming server

IMAP - use port 993 with SSL type.

POP3 - use port 995 & enable the option This server requires an encrypted connection (SSL), if available.

Outgoing hệ thống (SMTP) to use port 465 (or 587 if the submission port is enabled) with SSL or TLS type (depends on the server configuration).


Make sure that the hệ thống uses LVM:

The similar đầu ra will be returned if LVM is present:

# lvsLV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- swap centos -wi-ao---- 1.00g

Note: centos here is the name of the logical group. It will be used in the further steps

The similar đầu ra will be returned if LVM is not present:

# lvs-bash: lvs: command not found

# lvdisplay -vNo volume groups found.

Warning: In this case, solution from the article cannot be applied, as the hệ thống does not use LVM.

Follow the wizard khổng lồ create a Primary partition and its size. Primary type is selected by default, and the default kích cỡ corresponds to the không tính phí disk space size

Run partprobe to load partition changes in userspace:

# partprobe

Once new partition table is loaded, it is possible to add a new volume to lớn the logical group using its name:

# vgextend centos /dev/sda3Physical volume "/dev/sda3" successfully createdVolume group "centos" successfully extended

Note: Volume & logical group names may vary, in this case it is centos and sda3. Refer lớn step 6 and command cfdisk to get volume name và to step 2 & command vgdisplay to get volume group name

Then it is possible to extend logical volume of root directory to showroom all unused space available in the volume group:

# lvdisplay | grep "LV Path"LV Path /dev/centos/rootLV Path /dev/centos/swap

# ls -la /dev/centos/rootlrwxrwxrwx. 1 root root 7 Aug 28 21:14 /dev/centos/root -> ../dm-0

# lsblk /dev/dm-0NAME MAJ:MIN RM size RO TYPE MOUNTPOINTcentos-root 253:0 0 23G 0 lvm /

Note: Since /dev/centos/root is mounted on the /, as displayed above, it should be resized. Logical volume name may vary

# lvresize -l +100%FREE /dev/centos/root

Extend the partition located on the logical volume:

Note: To determine file system, run file -sL /dev/centos/root


Install required packages:

For .rpm-based OS (RHEL, CentOS, CloudLinux)

# yum install -y xfsprogs

For .deb-based OS (Debian, Ubuntu)

# apt install -y xfsprogs

Grow partition:

# xfs_growfs -d /dev/centos/root


DKIM “provides a method for validating a domain name identity that is associated with a message through cryptographic authentication” (www.dkim.org).

You enable DKIM thư điện tử signing for domains that use the Plesk DNS server và those that use an external DNS vps in a different way.

Enabling DKIM email Signing for Domains That Use the Plesk DNS Server

To enable DKIM signing of outgoing email, go to Websites & Domains > Mail Settings of a domain, select the Use DKIM spam protection system to sign outgoing e-mail messages checkbox and click OK.

If you have activated DKIM for a domain, Plesk adds the following two records khổng lồ the DNS zone of the tên miền (example.com stands for your domain name):

default._domainkey.example.com - contains the public part of the generated key._ domainkey.example.com - contains the DKIM policy. You can edit this policy.

Enabling DKIM thư điện tử Signing for Domains That Use an External DNS Server

If you use an external DNS service, DKIM signing will work for outgoing messages, but the receiving mail vps will not be able to validate these messages. As a workaround, you can switch off Plesk DNS server and địa chỉ cửa hàng a corresponding DKIM-related DNS record on the external DNS service. In this case, the receiving hệ thống will be able khổng lồ validate the messages. 

SPF và DMARC Policies for Outgoing Mail

In addition to lớn DKIM, Plesk supports SPF and DMARC policies for outgoing mail. DMARC carries out the specified policy as to lớn how to treat e-mail messages depending on the results of the DKIM và SPF checking. By default, DMARC uses general policy, và messages that did not pass checking are not deleted. You can use stricter policy. For example, you can specify that it is necessary for a message to pass both SPF & DKIM checking to be accepted by the recipient mail server.

You can change the SPF và DMARC policies for your domain name in the domain’s DNS settings.

To set up DMARC or SPF policy for your domain:

Go to Websites và Domains > navigate khổng lồ the domain name > DNS Settings and edit the DNS records related lớn SPF or DMARC. For example, this record contains the mặc định DMARC policy:


Use the ssh command to connect khổng lồ your instance. Specify your username & the external IP address for the instance that you want to connect to.

Download Prive Key from client area and save it lớn your workstationFor this example, the private key is at ~/.ssh/my-ssh-key. ssh -i ~/.ssh/my-ssh-key _ADDRESS

where:

USERNAME is your usernameIP_ADDRESS is the IP for your Cloud Server.

If the connection is successful, you can use the terminal khổng lồ run commands on your instance.

When you are done, use the exit command to disconnect from the instance.


Using a Public/Private key to lớn authenticate when logging into SSH can provide added convenience or added security. The Public/Private key can be used in place of a password so that no username/password is required khổng lồ connect khổng lồ the vps via SSH. Instead the chất lượng public & private key provide the secure authentication. The keys may also be generated with a different password from your cpanel password if desired.

Xem thêm: Cách Chặn Mail Rác Trong Yahoo Mail, How To Block An Email Address On Yahoo!: 7 Steps

Generate a ppk file

Click Load
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Locate the private SSH key that you have downloaded. Note: You will need choose lớn display All Files* from the menu to the right of the file Name field. Click the Save private key button khổng lồ create the ppk file.
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