Configure Email Server using PostFix, Dovecot and Squirrel Mail in RHEL 7 (CentOS 7)| Nehra Classes
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Configure Webmail/Dovecot Mail Server in
Configure Webmail/Dovecot Mail Server in RHEL 7 (CentOS 7):
==================================================
POSTFIX for SMTP (Simple Mail Transfer Protocol): Used for Sending the Emails.
DOVECOT for POP3 (Post Office Protocol): Used for Receiving the Emails.
SQUIRRELMAIL for IMAP (Internet Message Access Protocol): Used for Front Web End Mail Client.
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Server Configuration: RHEL 7
IP Address: 192.168.1.104
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1. Set the hostname in the machine.
hostnamectl set-hostname rhel7.nehraclasses.local
Add hostname entries in /etc/hosts file as shown below:
vim /etc/hosts
Add the following
192.168.1.104 rhel7.nehraclasses.local rhel7
2. Disable or make permissive the SELINUX
setenforce 0
getenforce
3. Install EPEL Repository:
wget dl.fedoraproject.org/pub/epel/epel-release-latest-…
rpm -ivh epel-release-latest-7.noarch.rpm
yum install -y epel-release
4. Allow the Apache default port 80 through your firewall/router:
firewall-cmd --permanent --add-port=80/tcp
Reload firewall using command:
firewall-cmd --reload
5. Install the Postfix Package.
yum install postfix -y
6. Configuring PostFix
vim /etc/postfix/main.cf
Line no 77 - Uncomment and set your mail server FQDN ##
myhostname = rhel7.nehraclasses.local
Line 85 - Uncomment and Set domain name ##
mydomain = nehraclasses.local
Line 101 - Uncomment ##
myorigin = $mydomain
Line 115 - Uncomment and Set ipv4 ##
inet_interfaces = all
Line 121 - Change to all ##
inet_protocols = all
Line 166 - Comment ##
#mydestination = $myhostname, localhost.$mydomain, localhost,
Line 167 - Uncomment ##
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
Line 266 - Uncomment and add IP range ##
mynetworks = 192.168.1.0/24, 127.0.0.0/8
Line 421 - Uncomment ##
home_mailbox = Maildir/
Save and exit the file.
Start/restart Postfix service now:
systemctl restart postfix
systemctl enable postfix
7. Test the Postfix Server:
Add the user account.
useradd nehra
passwd nehra
Install Telnet Package
yum install -y telnet
Check telnet
telnet localhost smtp
Type the commands:
ehlo localhost
mail from:nehra
rcpt to:vikasnehra
data
welcome to Postfix Mail Server
.
quit
ll /home/vikasnehra/Maildir/new/
Open the file with name using cat.
8. Install Dovecot Package
yum install -y dovecot
Configure Dovecot
vim /etc/dovecot/dovecot.conf
Line 24 - umcomment ##
protocols = imap pop3 lmtp
Edit file /etc/dovecot/conf.d/10-mail.conf file
vim /etc/dovecot/conf.d/10-mail.conf
Line 24 - uncomment ##
mail_location = maildir:~/Maildir
Edit /etc/dovecot/conf.d/10-auth.conf
vim /etc/dovecot/conf.d/10-auth.conf
And make the changes as shown below:
line 10 - uncomment##
disable_plaintext_auth = yes
Line 100 - Add the word: "login" ##
auth_mechanisms = plain login
Edit file /etc/dovecot/conf.d/10-master.conf,
vim /etc/dovecot/conf.d/10-master.conf
Make changes as shown below:
Line 91, 92 - Uncomment and add "postfix"
#mode = 0600
user = postfix
group = postfix
[...]
Start Dovecot service:
systemctl start dovecot
systemctl enable dovecot
Testing Dovecot
telnet localhost pop3
user vikasnehra
pass
retr 1
.
quit
9. Install Squirrel mail Package
yum install squirrelmail
Configuring Squirrel-Mail
cd /usr/share/squirrelmail/config/
./conf.pl
Enter 1
Enter 1 and change the organization Name
Press S
Press R for previous menu
Enter 2 for Server settings
Press 1
and type: rhel7.local (Name of Domain)
Press 3
Press 2 for switching from Send Mail to SMTP
Type S and Press Q for quit
10. Create a squirrelmail vhost in apache config file:
vim /etc/httpd/conf/httpd.conf
Enter the following:
Alias /webmail /usr/share/squirrelmail
Directory /usr/share/squirrelmail
Options Indexes FollowSymLinks
RewriteEngine On
AllowOverride All
DirectoryIndex index.php
Order allow,deny
Allow from all
/Directory
systemctl restart httpd
systemctl enable httpd
Enter the following command:
setsebool httpd_can_network_connect=1
Open Web Browser and type in address bar the following. And Use User Credentials to Login.
http://192.168.1.104/webmail
Your Dovecot Server is working.
===
Visit FB Page for Complete Steps:
www.facebook.com/nehraclasses/
===
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