Installing Dovecot

INSTALL DOVECOT

## yum install dovecot

edit dovecot

configuration file

## cp /etc/dovecot/dovecot.conf{,.orig}
## vim /etc/dovecot/dovecot.conf

listen = *
ssl = no
protocols = imap lmtp
disable_plaintext_auth = no
auth_mechanisms = plain login
mail_access_groups = vmail
default_login_user = vmail
first_valid_uid = 2222
first_valid_gid = 2222
#mail_location = maildir:~/Maildir
mail_location = maildir:/var/vmail/%d/%n

passdb {
    driver = passwd-file
    args = scheme=SHA1 /etc/dovecot/passwd
}
userdb {
    driver = static
    args = uid=2222 gid=2222 home=/var/vmail/%d/%n allow_all_users=yes
}
service auth {
    unix_listener auth-client {
        group = postfix
        mode = 0660
        user = postfix
    }
    user = root
}
service imap-login {
  process_min_avail = 1
  user = vmail
}

create virtual user’s configuration file

. this is where usernames and password hashes will be stored.

## touch /etc/dovecot/passwd
## doveadm pw -s sha1 | cut -d '}' -f2

## vim /etc/dovecot/passwd

info@mydomain.com:DOzcsKI8HY0bg8LAuz0DPKwS3WA=

## chown root: /etc/dovecot/passwd
## chmod 600 /etc/dovecot/passwd

START SERVICES

## chkconfig postfix on
## chkconfig dovecot on
## service postfix restart
## service dovecot restart

TEST THE SET-UP

Open your favorite e-mail client and configure it to use the newly created

account. Try to send/receive an email. If you experience any issues, check if there’s something logged in

you can also use

to test your smtp server, for example:

swaks --to support@mydomain.com --from email@address.net

more information about

you can find at

ADD ANOTHER ACCOUNT

set-up account’s mailbox

## vim /etc/postfix/vmail_mailbox
...
support@mydomain.com           mydomain.com/support/

set-up account’s alias(es)

## vim /etc/postfix/vmail_aliases
...
support@mydomain.com           support@mydomain.com

postmap configuration files and restart postfix

## postmap /etc/postfix/vmail_mailbox
## postmap /etc/postfix/vmail_aliases
## service postfix restart

generate password hash and add username:password-hash to passwd file.

## doveadm pw -s sha1 | cut -d '}' -f2
## vim /etc/dovecot/passwd
...
support@mydomain.com:DOzcsKI8HY0bg8LAuz0DPKwS3WA=

This is a simple, but yet very robust mail server set-up on a CentOS 6 VPS which supports SMTP and IMAP without SSL, webmail, anti-spam, anti-virus, filter rules, opendkim etc. —

Of course, if you are one of our  VPS Hosting customers, you don’t have to do any of this, simply ask our admins  and relax. Our admins will set this up for you immediately.