To enable IMAP on Oracle Linux 6, the steps are pretty simple.
- Configure postfix. Edit /etc/postfix/main.cf
uncomment home_mailbox = Maildir/
add to the end of the main.cf file :
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_auth_enable = yes
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
- restart service
#service postfix restart
- Install dovecot
# yum install dovecot
- enable the imap service
# vi /etc/dovecot/dovecot.conf
change from:
#protocols = imap pop3 lmtp
to:
protocols = imap
- edit /etc/dovecot/10-mail.conf
#vi /etc/dovecot/10-mail.conf
add
mail_location = maildir:~/Maildir
- edit /etc/dovecot/conf.d/10-master.conf
change from:
unix_listener auth-userdb {to
#mode = 0600
#user =
#group =
}
unix_listener /var/spool/postfix/private/auth {
mode = 0666
user = postfix
group = postfix
}
- edit /etc/dovecot/conf.d/10-auth.conf
# vi /etc/dovecot/conf.d/10-auth.conf
disable_plaintext_auth = no
auth_mechanisms = plain login
- check the status of the sevice
[root@ol6 ~]# chkconfig --list dovecot
dovecot 0:off 1:off 2:off 3:off 4:off 5:off 6:off
- enable it in case it was off
[root@ol6 ~]# chkconfig dovecot on
- start the service
[root@ol6 ~]# service dovecot start
Starting Dovecot Imap: [ OK ]
- check the service is listening on imap port.. tcp 143 for imap, tcp 993 for imaps
[root@ol6 ~]# netstat -anp | egrep ':143|:993'
tcp 0 0 0.0.0.0:993 0.0.0.0:* LISTEN 26394/dovecot
tcp 0 0 0.0.0.0:143 0.0.0.0:* LISTEN 26394/dovecot
tcp 0 0 :::993 :::* LISTEN 26394/dovecot
tcp 0 0 :::143 :::* LISTEN 26394/dovecot
- configure the firewall to allow incoming connections to 143 and 993 tcp if you have iptables running
- done!
Now, let's test the system is running.
Dovecot will use a combination of user and password, so will check access for oracle user
- send a test email to our user
# echo test | mail -s test oracle
- install mutt mail client
#yum install mutt
- set a password to a user, in order to test if you don't have a password yet
#passwd oracle
- test dovecot imap
#mutt -f imap://server/user
- accept the certificate
(r)eject, accept (o)nce, (a)ccept always
Done.Ok, not so simple, but pretty straightforward.
Dedicated to my friends on tcs india.
Alvaro.
