Roundcubemail with Postfix on Fedora

I just set up Roundcubemail on the Fedora+Postfix server. There is an array of not so great tutorials but I found a good one which is complete. Here is the link:

Easy Setup of Roundcubemail

Came across one issue where mail could not be deleted.
Had to edit the following directive in /etc/roundcubemail/main.inc.php
$rcmail_config['create_default_folders'] = TRUE;


Restart all related services.

Fedora + Postfix + Dovecot + TLS/SSL + SASL

I was trying to set up Postfix with Dovecot, TLS/SSL on a new server and came across some issues so I documented them here and the install process again.

Tutorials Used

• Fedora Mail Server
• Postfix on CentOS

Install the Following

• Postfix
• Dovecot
• OpenSSL
• MailX
• SASLAuthD

Configure Postfix according to my previous article on the blog

In /etc/dovecot/conf.d/10-auth.conf add the following:

passdb {

driver = pam

}

Forward these Ports to the Mailserver if Behind Gateway

smtp: 25, 2525, 3535

smtp submission: 587

smtp over ssl: 465

pop3: 110, 995

imap: 143, 220, 993, 585

Activate and start all the above daemons using chkconfig and service saslauthd on etc.

Issue #1

Ran into a problem where Postfix would not relay mail for its own domain.

Had to add $mydomain to "mydestination" directive.

Issue #2

/var/log/maillog said mail coming from outside is going to root@platinumfactor.com even though the user exists on the system.

saslauthd service was not running. Also removed these from main.cf

smtpd_sasl_type = dovecot

smtpd_sasl_path = private/auth

Issue #3

Outgoing mail was not being delivered.

I had enabled TLS and provided a certificate to Postfix.

The client needed to be told to use SSL/TLS.

Issue #4

Set disable_plaintext_auth = yes

Incoming mail not being delivered.

Set client to use Secure POP (port 995)

Postfix + Dovecot + SSL/TLS

Ok so I was trying the next step. After getting Postfix+Dovecot working with plain text authentication. I wanted to try TLS. I saw these errors:

warning: xsasl_cyrus_server_get_mechanism_list: no applicable SASL mechanisms
fatal: no SASL authentication mechanisms

Solutions is to yum install cyrus-sasl-plain

Here is the source

TLSv1 has deprecated SSLv3, and Dovecot seems to use it by default, but if that doesn't work then edit configuration files in /etc/dovecot/ directory.

Dovecot SSL Setup:
Dovecot SSL from Official Website
Here is another very useful HOWTO guide:
CentOS + Postfix + Dovecot + SASL + SSL

To check if SSL/TLS is being used:
openssl s_client -connect mail.platinumfactor.com:995
(Thanks to mick_laptop on #dovecot on Freenode for help in testing)

Postfix with Dovecot Configuration

Without making things too complicated, all I wanted was a running mail server which will send and receive email. I decided to use Dovecot for POP3 functionality. The install is simply yum install dovecot.

These are the 3 real lines in my /etc/dovecot/dovecot.conf

protocols = imap pop3 lmtp
listen = *
!include conf.d/*.conf

Go into /etc/dovecot/conf.d and edit 10-auth.conf
Change this line:

disable_plaintext_auth = no

This is because we are not using SSL yet.

Aside from this, proper trust and relay permissions need to be set in /etc/postfix/main.cf file

I made these changes:
mynetworks_style = class
mynetworks = 192.168.1.0/24, 127.0.0.0/8


NOTE: Mailbox type needs to be changed from mbox to Maildir/ in /etc/postfix/main.cf. This caused me a lot of heartache trying to get Dovecot to work!

Fiddling with Postfix

I am just reading up on Postfix.

I wanted to try exchanging some mail locally for test and tried to find the mail MUA, but couldn't. It is actually now called mailx (or nail) package, so yum install mailx should get it.

Trying to do nslookup and dig, but that wasn't installed. Search yielded that they are part of bind-utils package. Do a yum install bind-utils

Here is the output of my postconf -n

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
home_mailbox = Maildir/
html_directory = no
inet_interfaces = all
inet_protocols = all
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain, mail.$mydomain, www.$mydomain, ftp.$mydomain
mydomain = platinumfactor.com
myhostname = mail.platinumfactor.com
mynetworks = 192.168.1.0/24, 127.0.0.0/8
mynetworks_style = class
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.7.1/README_FILES
sample_directory = /usr/share/doc/postfix-2.7.1/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
unknown_local_recipient_reject_code = 550