Email Server For 5000 Users

Email Server For 5000 Users

We are going to setup an email system for 5000 users. our selection of Open Source Software to this setup :-

(1) Operating System

CentosOS 5.2 64 bits

http://www.centos.org/

We may run it under XEN.

(2) Users management

We will used Centos Directory Server

http://wiki.centos.org/HowTos/DirectoryServerSetup

or to use OpenLDAP and PHPLdapAdmin

(3) Email Backend

We want to use Dbmail for email storage and IMAP server.

http://www.dbmail.org/

(4) Database

We will used Postgresl for Dbmail and Horde IMP.

http://www.postgresql.org/

(5) Mail Tranfer Agent

Postfix will be our selection

http://www.postfix.org/

(6) Web Email

We are going to used Horde Groupware

http://www.horde.org/groupware/