How to Install Dovecot to configure POP/IMAP server

Install Dovecot to configure POP/IMAP server. POP uses 110/TCP, IMAP uses 143/TCP.

Dovecot is an open-source IMAP and POP3 server for Linux/UNIX-like systems, written primarily with security in mind. Timo Sirainen originated Dovecot and first released it in July 2002. Dovecot developers primarily aim to produce a lightweight, fast and easy-to-set-up open-source mailserver.

According to Openemailsurvey Dovecot has an installed base of over 2.9 million email servers all over the world and a global market share of 57% of all IMAP servers. While Dovecot software can be used in commercial use without any license fees, a commercial version is also available as Dovecot Pro. The commercial version is provided by Dovecot Oy along with support and enterprise add-ons such as the object storage and full-text search plugins. Since March 2015, Dovecot Oy has been part of the Open-Xchange Family.

• Install Postfix to configure SMTP server. SMTP uses 25/TCP

1.Install Dovecot.

[root@mail ~]# yum -y install dovecot

Dovecot  Configuration

[root@mail ~]# vi /etc/dovecot/dovecot.conf
# line 24: uncomment
protocols = imap pop3 lmtp
# line 30: uncomment and change ( if not use IPv6 )
listen = *

[root@mail ~]# vi /etc/dovecot/conf.d/10-auth.conf
# line 10: uncomment and change ( allow plain text auth )
disable_plaintext_auth = no
# line 100: add
auth_mechanisms = plain login

[root@mail ~]# vi /etc/dovecot/conf.d/10-mail.conf
# line 30: uncomment and add
mail_location = maildir:~/Maildir

[root@mail ~]# vi /etc/dovecot/conf.d/10-master.conf
# line 96-98: uncomment and add like follows
# Postfix smtp-auth
unix_listener /var/spool/postfix/private/auth {
    mode = 0666
    user = postfix 
    group = postfix 
}

[root@mail ~]# vi /etc/dovecot/conf.d/10-ssl.conf
# line 8: change (not require SSL)
ssl = no

[root@mail ~]# systemctl start dovecot 
[root@mail ~]# systemctl enable dovecot 

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