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)