Download EMAIL SYSTEM

A Complete and Secure E-Mail Infrastructure system
Table of Contents
Introduction.................................................................................................................................................... 5
The Target Environment.............................................................................................................................. 5
Objectives................................................................................................................................................... 5
General System Description.......................................................................................................................... 7
Server Groups Arrangement....................................................................................................................... 8
Server functionality.................................................................................................................................... 10
Operating System Software Setup............................................................................................................... 10
General OS Setup and Software............................................................................................................... 11
Prerequisites........................................................................................................................................... 11
Setup on All Servers............................................................................................................................... 11
Logging................................................................................................................................................... 12
OS Security............................................................................................................................................ 12
DNS Configuration....................................................................................................................................... 12
A records................................................................................................................................................... 12
PTR records.............................................................................................................................................. 13
MX records................................................................................................................................................ 13
SPF records.............................................................................................................................................. 13
TLS/SSL certificates.................................................................................................................................... 13
Mail Services Description............................................................................................................................ 14
Types of Mail Servers................................................................................................................................ 14
Front end systems.................................................................................................................................. 14
Back end systems.................................................................................................................................. 14
Client systems........................................................................................................................................ 14
Functionality Summary Set up................................................................................................................ 14
Access Control Model............................................................................................................................... 16
Authentication, Names, Aliases, Groups, Lists.......................................................................................... 17
General Description................................................................................................................................ 17
Authentication......................................................................................................................................... 18
Names and Aliases................................................................................................................................. 18
Groups and Lists.................................................................................................................................... 19
LDAP schema......................................................................................................................................... 22
Mail Storage................................................................................................................................................ 22
Quota with Dovecot LDA........................................................................................................................... 23
E-Mail Software Setup................................................................................................................................. 23
Setting up Postfix...................................................................................................................................... 24
Front-End Relay (theano, elysso)........................................................................................................... 24
Back-End (gorgo, mirto)......................................................................................................................... 26
Setting up Dovecot.................................................................................................................................... 26
Front End (IMAP PROXY or Dovecot Director) Configuration (theano, elysso)......................................27
Back-end Configuration (gorgo, mirto).................................................................................................... 27
Summary table....................................................................................................................................... 27
Quota...................................................................................................................................................... 28
Sieve Filtering and ManageSieve........................................................................................................... 28
The Dovecot Configuration (dovecot -n)................................................................................................. 29
Virus and SPAM Control Setup.................................................................................................................... 30
Strategy..................................................................................................................................................... 30
AMAVISD.................................................................................................................................................. 31
Install and configure............................................................................................................................... 31
Postfix Integration................................................................................................................................... 32
SpamAssassin.......................................................................................................................................... 32
ClamAV..................................................................................................................................................... 32
Message Quarantine................................................................................................................................. 32
Email System-Administrator Manual-0.9.odt - Version 0.9.39 - Feb 16, 2015
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