Hi, >> >> The objective is, the mailserver will be easy to setup, maintained and have some >> 1. database backend for storing user info ( mysql? ) > > LDAP, almost everything can work with it out-of-the-box. SQL database > support varries, and usually needs additional plugins. If you know > exactly what you are doing, SQL might be good way to go regardless. > With CentOS you get Postgresql and MySQL. Personally, I am fan of > former, although later is more popular. > >> 2. spam and antivirus filtering > > For free, MIMEDefang, SpamAssassin, ClamAV. Commercial, I heard that > Sophos antispam works fabolously. > >> 3. webbase user administrations > > I used custom made stuff. If you use Horde/IMP for webmail (there's > also other applications from Horde framework for managing calendars, > filters, and so on), Horde has some ability for web based user > management too. > >> 4. Provide smtp,smtps,pop3,pop3s,imap,imaps service > > Sendmail or postfix (Sendmail has better plugin support for > anti-spam/virus scanners, Postfix is easier to configure but is not as > configurable as Sendmail). Dovecot or Cyrus (as packaged in CentOS it > is really trivial to setup). Cyrus scales well, and is suitable for > small and large installations. There's huge difference when opening > mailbox with 40,000+ emails (and I've got couple of 'em) in Dovecot and > Cyrus. So even if you have two users, Cyrus might be good way to go. > > If you are going to do webmail too, Squirrelmail (or whatever it is > called) is part of CentOS. Horde project has IMP (you'd need to install > Horde, than IMP under Horde). Horde project also has bunch of > additional applications that integrate with each other for calendaring, > todo lists, generating server-side mail filters (supported are procmail > for "unix-account-based" mailboxes, and sieve for Cyrus based > mailboxes), and much more. Check http://www.horde.org/ for more info. > Installing Horde/IMP for the very first time might seem a bit > complicated since it requires bunch of additional PHP module, but it > might be worth it. > > Also, check "which imapd" thread from couple of days ago. Thanks, this is really interesting since all the applications are CentOS default.. I need to study all those first and if you could provided any how-to or guide on integrating this, I'll really appreciates it. Thanks In Advances. Regards, ijez