Zimbra, is the leader in next-generation messaging and collaboration software. Built Zimbra Collaboration Suite (ZCS) with the belief existing email and calendaring solutions are broken- the result is an innovative experience for end-users and system administrators.

ZCS integrates your entire organization.>Zimbra emphasize compatibility with today's diverse desktop and application environments. This means, for instance, desktop users in Outlook can share their calendar with peers who use Apple iCal or Zimbra Desktop on Linux.

ZCS streamlines your workflow and saves time.Zimbra browser-based AJAX client delivers a richer experience with a message conversation view and visual search builder that makes multi-gigabyte inboxes easier to use. Zimbra also integrate 3rd party applications as "mash-ups" via web services so you can view CRM data, maps, or anything else without leaving the context of a message.

ZCS uses open technology. Zimbra Server is built with open technology and runs on Linux and Mac OS X; think of it as your open source Exchange alternative. The Open Source Edition is free, we also offer a Network Edition with Zimbra support.

We estimate that over 95% of all email traffic on the Internet is spam. Spam is the most complex problem facing the Internet today. The problem has led to millions of dollars in lost productivity and additional infrastructure costs for businesses and service providers. Businesses that maintain in-house email servers are fighting a losing battle to protect their systems from spam because the complexity of the problem is constantly increasing. Spammers are growing wiser on a daily basis, learning new methods to elude common spam defenses and acquiring more sophisticated computer networks to bombard mail systems and penetrate inboxes. i2k2 Networks has build a solution to collaborate tools like grey listing, Message Sniffer and Spam Assassin and made mail systems 99+% spam free.

Businesses rely heavily on email for central business processes like customer transactions, vendor relationships, and internal communications. Our industry-leading 100% uptime guarantee is a reflection of both our understanding of email's central importance to many businesses and a reflection of the high availability email system engineered by our experts.

In the past, we have tried the more traditional, high availability design approach: high-end servers with high-end disk subsystems. Key services are now spread across larger numbers of servers in single-purpose clusters. Our experience has shown this greatly reduces the risk that any service might become unavailable to our customers.

Email data storage is spread across a large number of mirrored pairs of servers. Each email storage server has a partner, which always contains a full copy of the primary server's data. This data is replicated between the two servers in real-time as emails arrive, using replication software called DRBD In the event that a primary storage server becomes unresponsive, software on the standby server immediately assumes the network identity of the primary server and begins handling all read and write operations. Engineers are notified of failures and the faulty server can be either repaired or replaced, and the storage software automatically handles the process of getting the data on the two servers back in sync.

Advantages :

1. 0 downtime in case of any failure in one server, by creating a complete online redundancy of machine and software failure
2. Ability to quickly and smoothly scale out system capacity to meet demand.
3. Adding email storage capacity is as simple as bringing online new pairs of email storage servers.