In this post we are going to cover the following topic:
How to set static ip address and system hostname
How to join domain
How to install local mail(squirrelmail) using postfix and dovecot
HOW TO SET STATIC IP ADDRESS AND SYSTEM HOSTNAME
Open terminal on centos and type command as shown above to configure network
press enter on edit a connection
press enter to edit the network adapter
insert the information as shown above
press enter system hostname
create your hostname
Key in password for Ali(the user that we set up during installation of centos7) to change the hostname
Press enter
How to join domain:
Install package as shown above to join the domain cybertech365.info from Microsoft windows
Discover the domain cybertech365.info by using command realm discover
Join the domain as administrator, password for administrator of domain is required.
Installation of localmail (using postfix, dovecot and suqirrelmail):
Remove sendmail by using command as shown above
edit hosts file
Add host’s IP address and hostname at the last line the file
Install epel-release package and allow port 80 in firewall
Install postfix and edit the file main.cf
Edit accordingly on line 76 and 83
Edit accordingly on line 99 and 113
Edit accordingly on line 164 and 165
Edit accordingly on line 264
Edit accordingly on line 418 and 419, press key esc + shift and ; on keyboard, type wq to save the file and quit
Enable and restart postfix then install telnet
Check SMTP connection using telnet session by key in command as shown above
List all file listed under the recipient, Ali’s mail directory
check the content of the mail
install dovecot and edit dovecot.conf file
Edit accordingly on line 23 and 24
Edit 10-mail.conf file
Edit accordingly on line 24
Edit 10-auth.conf file
Edit on line 10
Edit line 100
Edit 10-master.conf file
Edit line 91 and 92
Type command as shown above to enable and start dovecot
Test pop3 connection with telnet, retr 1 is use to retrieve the whole message in mail directory
Use command above to install squirrelmail
Change directory as shown above and run conf.pl to configure squirrelmail
Key in 1 and press enter
Enter domain name
Enter s to save data
Change domain to cybertech365.info
Use SMTP
Edit httpd.conf file
Add text from line 355 to 363 at the bottom of the file, press the key esc + shift + ; and type wq to save the changes and quit
Restart httpd
Open firefox browser
In case cannot connect to imap server and show permission denied during login, run command as shown above