Richagobal Zimbra Archietcture and other compoments

Architecture

Dedicated Zimbra Server in Godaddy ISP Farm which is an Virtual Server with Centos 6
Locally , they are running Licensed Windows based Mdaemon Mail Server .
Mdaemon Server has all the accounts and all users access it . No user access the Zimbra Server directly
Mdaemon server polls all the user accounts in zimbra and download there mails in mdaemon server .
Also while sending mails the mdaemon server relays mails via zimbra Server and then zimbra Server via mail.tetrain.com ( godaddy has poor smtp services , i.e why mails are finally routed via mail.tetrain.com )

Spam tuning via http://wiki.zimbra.com/index.php?title=Improving_Anti-spam_system
Custom Scripts to change all the users of both the domains , lying in /home/richa directory
All mails which are marked Junk / spam by Zimbra is also going to a single mail box all_spam_tagged . Reference http://www.brandonchecketts.com/archives/spamassassin-postfix-to-deliver-spam-to-an-alternate-mailbox and http://wiki.zimbra.com/wiki/King0770-Notes-Header-Checks