Before we start…

With iRedMail, you can deploy an OPEN SOURCE, FULLY FLEDGED, FULL-FEATURED mail server in several minutes, for free.

This according to the project website.

When we say Fully Fledged we don’t exaggerate. iRedMail includes antivirus, protection tools, a web client, and many other things like calendar and so on that make it the best in its field.

This is why we recommend a server with 4Gb of RAM so you don’t have any problems deploying it. Also, the Debian server must be clean. This means that it should be freshly installed.

Besides this, you have to configure a DNS Mx with your hostname and domain name.

For example:

In this post, I will use the domain angtest.ga, and the hostname will be mail.angtest.ga

Properly configuring a DNS A (one to your domain and another to mail. [your-hostname] and MX is fundamental for us to be able to use it.

So, let’s get started.

Configure a mail server with iRedMail on Debian 10

1.- Set the hostname

Before we start we have to update our system. To do this, execute the following commands:

sudo apt update
sudo apt upgrade

Then, you can define your hostname for it to run:

sudo hostnamectl set-hostname

For this example:

sudo hostnamectl set-hostname mail.angtest.ga

Now edit the /etc/hosts file and add the following lines

127.0.0.1 mail.angtest.ga localhost

Remember to replace my hostname with yours. Then save the changes and close the editor.

2.- Download and run iRedMail on Debian 10

Now the next step is to download iRedMail by using the wget command.

wget https://github.com/iredmail/iRedMail/archive/1.3.2.tar.gz -O redmail.tar.gz

Then, decompress the downloaded file

tar xvf redmail.tar.gz

Then access the folder that is generated

cd iRedMail-1.3.2/

Give execution permissions to the iRedMail script

chmod +x iRedMail.sh

And execute it with the command sudo.

sudo bash iRedMail.sh

And it will start all the process of package installation and configuration.

In the next screen, you have to define the directory where the emails will be stored.

Then you can install Nginx to run the web client that incorporates iRedMail. If you don’t need one, you can choose not to install Nginx, otherwise install it. In this case, we will install it.

Now it’s up to you to choose which application to use the email server to store your contacts and accounts. The options are OpenLDAP, MariaDB, and PostgreSQL. We will choose MariaDB.

If you choose MariaDB, you have to define a root password.

Then, you have to indicate which is your domain.

In the next screen, you have to specify a password for the mail domain administrator. Remember that it has to be strong enough.

Now it’s time to choose the components to be used by iRedMail.

Then you will see an output where the options you have chosen are shown.

You will also be asked if you want to use the firewall rules that iRedMail offers.

In the end, if everything went well, you will see the following screen.

Now reboot the server.

When it restarts, you can go to https://mail.your-domain.com/iredadmin/ and you will see the login screen.

3.- Strongly recommended – Configuring the TLS certificate

In an email server, the main thing is security so we have to generate a TLS certificate. The best way to do this is to use Let’s encrypt

So, install the certbot package.

sudo apt install certbot

Then, execute the following command to generate the certificate

sudo certbot certonly --webroot --agree-tos --email your-email@example.com -d mail.your-domain.com -w /var/www/html/

Remember to replace the fields with your domain.

They must now be added to postfix and Dovecot.

To add them to Postfix, open the Postfix configuration file:

sudo nano /etc/postfix/main.cf

Find the lines:

smtpd_tls_key_file = /etc/ssl/private/iRedMail.key
smtpd_tls_cert_file = /etc/ssl/certs/iRedMail.crt
smtpd_tls_CAfile = /etc/ssl/certs/iRedMail.crt

And replace them with the following:

smtpd_tls_key_file = /etc/letsencrypt/live/mail.your-domain.com/privkey.pem
smtpd_tls_cert_file = /etc/letsencrypt/live/mail.your-domain.com/cert.pem
smtpd_tls_CAfile = /etc/letsencrypt/live/mail.your-domain.com/chain.pem

Replace mail.your-domain.com with the correct value in your case.

Save the changes and close the editor.

To apply the changes you have to restart the Postfix service

sudo systemctl reload postfix

Now it’s Dovecot’s turn. Open the application configuration file.

sudo nano /etc/dovecot/dovecot.conf

And find the lines:

ssl_cert = </etc/ssl/certs/iRedMail.crt
ssl_key = </etc/ssl/private/iRedMail.key

And replace them with the following:

ssl_cert = </etc/letsencrypt/live/mail.your-domain.com/fullchain.pem
ssl_key = </etc/letsencrypt/live/mail.your-domain.com/privkey.pem

Again, replace mail.your-domain.com with the correct value in your case.

Save the changes and close the editor. To apply the changes, execute:

sudo systemctl reload dovecot

Now yes, the connections with our server are more secure.

4.- Preparing iRedMail to the first use

Now it’s time to create a new user to test the server.

Login to the admin panel.

Go to Add > Users and define an email address and password. You can also define a limit of use.

After that, you will see that the user has been created and you can expand or reduce the mailbox.

5.- Access to the mail server

Now if you can go to https://mail.your-domain.com/mail/ and see the web client

Now you can send and receive emails to your address.

Optionally, you can even use a third-party client such as Thunderbird. Look at the image and note the parameters to use.

In the end, the connection is successful and you can start using it.

So, enjoy it.

The post How to configure a mail server with iRedMail on Debian 10? appeared first on Linux Windows and android Tutorials.

RainLoop is a modern email client created in PHP. It is quite lightweight and does not consume too many resources. So we’re talking about a web-based client. It is compatible with many email providers, but also with its own mail server. So we have a new option to handle mail quickly and easily. RainLoop is open source since it is released under the GNU AFFERO license. However, it has an enterprise version with more features focused on businesses.

In the community version these are some of its features:

• Modern user interface.
• Complete support of IMAP and SMTP protocols including SSL and STARTTLS.
  Extending functionality with plugins installed through the admin panel.
• Perfect rendering of complex HTML mails.
• Drag’n’drop for mails and attachments.
• Keyboard shortcuts support.
• Autocompletion of e-mail addresses

In addition, the application has integration to popular services such as Dropbox, Twitter, Google, and Facebook.

So, let us start to install RainLoop.

1. Install Apache and PHP

Being a web-based application, the first thing we have to do is install Apache and PHP for everything to work. So open a terminal or connect to your server using SSH and run the following command:

:~$ sudo apt install apache2 php php-curl php-json php-iconv php-xml php-dom php-mysql php-pdo libapache2-mod-php

Once the process is complete. PHP and Apache will be installed and ready to run. Then, it is a good idea to enable and check the status of the service.

:~$ sudo systemctl enable apache2
:~$ sudo systemctl status apache2

2. Install MariaDB

Now, you need to install a database manager. This step is optional because RainLoop does not require it. However, it is good to do so in order to extend its functionality.

So run the following command:

:~$ sudo apt install mariadb-server

Then, set a root password using the mysql_secure_installation script.

:~$ sudo mysql_secure_installation

After defining the root password, you will have to answer other configuration questions. You can answer whatever you want, in this post, I will answer like this: Y, N, Y, Y.

3. Install RainLoop

It is now possible to install RainLoop. First of all, you have to download it using wget. So run the following command:

:~$ cd /tmp/
:~$ wget http://www.rainloop.net/repository/webmail/rainloop-community-latest.zip

Next, you have to create a new folder for RainLoop and then, decompress it.

:~$ sudo mkdir /var/www/rainloop
:~$ sudo unzip rainloop-community-latest.zip -d /var/www/rainloop

If you do not have unzip installed, you just need to install it with sudo apt install unzip.

It is now necessary to set the correct permissions for the RainLoop file folder.

:~$ cd /var/www/rainloop
:~$ sudo find . -type d -exec chmod 755 {} \;
:~$ sudo find . -type f -exec chmod 644 {} \;

Now, it is necessary to change the owner of the folder so that there are no problems in which the application can handle it.

:~$ sudo chown -R www-data:www-data .

The next step is to create a new VirtualHost in Apache so that RainLoop can run properly. In addition, this will considerably improve the way we access the application.

:~$ sudo nano /etc/apache2/sites-available/rainloop.conf

And add the following:

<VirtualHost *:80>
  ServerName yourdomain.com
  DocumentRoot "/var/www/rainloop/"

  ErrorLog "/var/log/apache2/rainloop_error_log"
  TransferLog "/var/log/apache2/rainloop_access_log"

  <Directory />
    Options +Indexes +FollowSymLinks +ExecCGI
    AllowOverride All
    Order deny,allow
    Allow from all
    Require all granted
  </Directory>

  <Directory /var/www/rainloop/data>
    Options -Indexes
    Deny from all
  </Directory>
</VirtualHost>

Then, save the file and close it. To apply the changes, you need to enable the new virtualhost and then restart Apache.

:~$ sudo a2ensite rainloop.conf
:~$ sudo systemctl reload apache2

4. Set up RainLoop using the web interface

Now, you can access the RainLoop address from your web browser. Go to http://your-server/?admin to access to the admin panel.

The default credentials are admin and 12345.

Once you have logged in, you will be able to change your password and review all the settings you want.

For example, it is recommended to change the default administrative password.

In the section of domains, you can configure the domains you want. Whether it’s a personal one or a more popular one like Gmail.

Next, go to the main screen of RainLoop and put your credentials.

Conclusion

RainLoop provides us with a modern interface for our email. It is especially useful when we have a personal mail server running.

Share this post with your friends.

The post Install RainLoop a web-based email client on Ubuntu 18.04 appeared first on Linux Windows and android Tutorials.

1. Mail Box: A central storage location – could be a local disk within the server – that store every message send by users.
2. Mail Sender: When a message is being sent, this helps to route mails to the central MailBox.
3. Mail Receiver: Helps to retrieve and get messages into the local system from the central Mailbox
4. Mail Agent: A place where user can compose & read mails.

The selected Applications are;

• Mail Sender (SMTP) => Postfix
• Mail Receive (IMAP/POP) => Dovecot
• Mail Agent => Thunder Bird

Configuring Postfix:

01. Package Installation

yum install postfix

02. Reflecting the desired parameters in main configuration file => /etc/postfix/main.cf
Note that this file is having bunch of configuration parameter, so be mindful to edit only those are mentioned below.

myhostname = mail.example.com        
mydomain = example.com               
myorigin = $mydomain                  
inet_interfaces = all                 
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain        
mynetworks = 127.0.0.0/8, 10.0.0.0/24    

home_mailbox = Maildir/               
message_size_limit = 10485760         
mailbox_size_limit = 1073741824

myhostname => hostname of the server
domain => domain-name of the server
myorigin => the domain-name append to every message that are sent off by the server (for example, @example.com)
inet_interfaces => enable server to listen from all local interfaces
mydestination => which domain the server will be responsible for mail delivery.
mynetworks => from which network subnets to allow access for sending & receiving mails.
home_mailbox => specify path of the mail storing location
message_size_limit => limit an email size for 10M
mailbox_size_limit => limit a mailbox for 1G

Configuring Dovecot:

01. Package Installation

yum install dovecot

02. Unlike Postfix, Dovecot maintain different aspect of configurable option in different files. Let go through the once that is important for this demo.

=> vim /etc/dovecot/dovecot.conf

protocols = imap pop3 lmtp            
listen = *

=> vim  /etc/dovecot/conf.d/10-auth.conf

auth_mechanisms = plain login
disable_plaintext_auth = no

=> vim /etc/dovecot/conf.d/10-mail.conf

mail_location = maildir:~/Maildir

=> vim  /etc/dovecot/conf.d/10-master.conf

# Postfix smtp-auth
unix_listener /var/spool/postfix/private/auth {
mode = 0666
user = postfix
group = postfix
}

=> vim /etc/dovecot/conf.d/10-ssl.conf

ssl = no

Now its time to start the respective service and check the status each.

systemctl start postfix
systemctl start dovecot

systemctl status postfix
systemctl status dovecot

Configuring FirewallD:

01. To allow SMTP, IMAP/POP traffic, firewall daemon should be configured.

firewall-cmd --zone=public --add-port=25/tcp
firewall-cmd --zone=public --add-port=25/tcp --permanent
firewall-cmd --zone=public --add-port=110/tcp
firewall-cmd --zone=public --add-port=110/tcp --permanent
firewall-cmd --zone=public --add-port=143/tcp
firewall-cmd --zone=public --add-port=143/tcp --permanent

Configuring Thunderbird:

Following installation and configuration suppose to be in a graphical environment.

01. Package Installation

yum install epel-release
yum install thunderbird

02. Lets create local user accounts for our demo

useradd --home-dir /home/user1 -m --shell /bin/bash user1
useradd --home-dir /home/user2 -m --shell /bin/bash user2

03. Create user account on Thunderbird.

Once you launch the Thunderbird, Under Preferences > Account Setting it allows to create new user account with following details.

Make sure to fill the parameters as in the figure, but its important to change the Server hostname for both the IMAP/SMTP to what you have in your environment.

Once you have two account, you can send/receive mails in between.

“Hope this has been informative for you”

The post Setting up Mail Infrastructure on top of CentOS7 appeared first on Linux Windows and android Tutorials.

Companies are turning to be technologically independent from other large companies and to be the ones that manipulate their data, including the most sensitive ones. However, it is important to bear in mind that depending on the infrastructure and personnel resources, there may be more disadvantages than benefits to taking this option.

In this article we are going to configure a personal mail server on our server with Ubuntu 18.04

Let’s get to work

1.-Upgrading the operating system

This is done to provide the latest software updates and security patches to improve server performance. First we log in as root user:

             sudo -i

As root user, we write:

           apt update && apt -y upgrade

2.-Installing Postfix

Postfix is a free software/open source mail server, a software program for routing and sending email. It is simple and versatile. We will use it in this tutorial. Run this command on terminal for install it.

            apt install postfix

As soon as you finish the download and installation, we will skip this screen.

We chose Internet Site and press enter.

We now place our domain

And finally the installation is complete

Once the installation is done we must restart the postfix service.

             systemctl restart

In case of modifying the values we have placed, we can reconfigure the package with the command:

dpkg-reconfigure postfix

3.-Dovecot’s turn now

Dovecot is an open source IMAP and POP3 server for GNU/Linux / UNIX-like systems, written with security in mind. To install it:

And then we start and enable the service:

                systemctl start dovecot

Next:

                systemctl enable dovecot

4.-Installing SquirrelMail

SquirrelMail is a webmail application created by Nathan and Luke Ehresman and written in PHP. It can be installed on most web servers as long as it supports PHP and the web server has access to an IMAP server and another SMTP server. To download:

            wget https://sourceforge.net/projects/squirrelmail/files/stable/1.4.22/squirrelmail-webmail-1.4.22.zip

Then we decompressed

           unzip squirrelmail-webmail-1.4.22.zip

We proceed to move it inside the web server and change its owner and permissions.

            mv squirrelmail-webmail-1.4.22 /var/www/html/

            chown -R www-data:www-data /var/www/html/squirrelmail-webmail-1.4.22/

and finally:

           chmod 755 -R /var/www/html/squirrelmail-webmail-1.4.22/

It’s a good idea to change the name:

             mv squirrelmail-webmail-1.4.22 /var/www/html/squirrelmail

Before using Squirrelmail ask us to configure them. We can do it thanks to the configuration script that comes inside the conf folder.

           perl /var/www/html/squirrelmail/config/conf.pl

Enter “2” to access the server options

And now “1” to define the domain.

we return by pressing “r”. Enter the general options by typing “4” Then in option “11” change “false” to “true” by typing “y”.

We leave the script and we have to go to the web browser to verify that the installation has been successful.

             http://IP_SERVER/squirrelmal

5.- creating users for the mail server

To log in from the web interface, we must create a user name and password.

           useradd user1

           passwd user1

then we create a folder inside the apache location and make it its default folder.

            mkdir /var/www/html/user1

            usermod -m -d /var/www/html/user1 user1

then change the owner of the folder for the new user

             chown -R user1:user1 /var/www/html/user1

6.- Logging in to SquirrelMail

Finally we access the web interface and log in:

And finally we see the interface working.

Note: If at the moment of logging in with the username and password, you give us an error. It’s most likely an error in permissions.

The post How to setup a mail server on Ubuntu 18.04? appeared first on Linux Windows and android Tutorials.