Feature Comparison between Zimbra and MS Exchange

1. Rahul Bhatt, i2k2 Networks, India
Fully Managed Hosting Solution
Dedicated Web Server, Email & Collaboration http://www.i2k2.com/
+91-9654700996, +91-120-4663092 rahulbhatt@i2k2.com
V/S
Sr. No. Features
Server OS support
Linux/Unix YES X
Windows X YES
SMTP YES YES
POP3 YES YES
IMAP YES YES
SMTP over TLS YES YES
NNTP YES YES
SSL YES YES
Webmail YES YES
Storage
Database YES ESE only*
File system YES YES
Authentication
SMTP AUTH YES YES
APOP YES YES
Filesystem YES X
Database YES X
LDAP YES YES
Antispam Features
DNSBL YES YES
Embedded Antivirus ClamAV ClamWall extension
Embedded Antispam SpamAssassin X
*Extensible Storage Engine
Comparison of Zimbra & Microsoft Exchange Server

2. Rahul Bhatt, i2k2 Networks, India
Fully Managed Hosting Solution
Dedicated Web Server, Email & Collaboration http://www.i2k2.com/
+91-9654700996, +91-120-4663092 rahulbhatt@i2k2.com
Platform Architecture, Robustness & Scale
COMMENTS
Platform • Solution has been around for 4+ yrs Zimbra
Longevity • Exchange been around for 10+ years
Platform • ZCS architecture designed ground-up based on
Architecture new-age/web 2.0 paradigm & trends
• Exchange core kernel, designed in early 1990s
is not modular, and cannot easily adapt
Platform • ZCS leverages more robust underlying
Robustness operating environment & proven components
• Reliability and uptime issues plague Exchange
users (avg downtime of 4 hours/month)
Platform • ZCS scales to millions of users and gigabyte
Scalability mailboxes in production environments
• Exchange architecture limiting; difficult to
scale to GB mailboxes w/o significant hardware,
training
Basic Messaging Feature Set
Integrated • Support for email, calendaring and contacts
Calendaring, • ZCS also offers web mash-ups (Zimlets) based
Mail, Contacts integration for improved productivity
Integrated • ZCS integrated with proven Spam Assassin &
anti-abuse ClamAV solutions
• Exchange offers EHF and in-house antispam/virus
solutions that are yet to be proven
End-User Rich • Ajax (rich) web client access
Web Access • Tagging categories) flagging basic search
• ZCS: Keyboard Navigation, advanced search
• ZCS: Zimlets, “Rich” HTML client access
Admin Tools • Command-line tools, SOAP API access
• ZCS: Web-based any place/any time access
Mobile Devices • Windows Mobile devices, Palm Treo, Symbian,
Support Blackberry handsets
• ZCS: iPhone (Mobile Client via XHTML), iSync
• ZCS: Java-based downloadable client
Comparison of Zimbra & Microsoft Exchange Server

3. Rahul Bhatt, i2k2 Networks, India
Fully Managed Hosting Solution
Dedicated Web Server, Email & Collaboration http://www.i2k2.com/
+91-9654700996, +91-120-4663092 rahulbhatt@i2k2.com
Next Gen Collaboration Feature Set
Unified • Single inbox, Voicemail, VoIP access
Messaging • Exchange: TUI access to mailbox using TTS
Web Services • Basic SOAP API for server access
Framework & • ZCS: Web services framework (zSync) for client
Mash-ups access
• ZCS: Web Mash-ups framework (Zimlets) to
integrate 3rd party enterprise apps
Indexing • Index & facilitate search of message subject, body
& Search and MS Office attachments
• ZCS: Index, search and render in browser over 200
different attachment types
• ZCS: Syntactic & visual search options
Integrated • ZCS: Built-in Instant Messaging, cross-
IM/Presence application presence (XMPP) and Web
& Documents documents
Sharing & • Share mail, calendar and address book folders with
Collaboration internal users
• ZCS: Share folders with external users or make
them public
Multi-Modal Access
Outlook support • Exchange Native MAPI Service Provider
(PC) • Zimbra Native MAPI Service Provider
Apple Mail, iCal, • ZCS: Supports Apple Mail, iCal, iPhone via and
iPhone (Mac) iSync as well as Sync Services
KEY
LOW MEDIUM HIGH
Contact:
Comparison of Zimbra & Microsoft Exchange Server

4. Rahul Bhatt, i2k2 Networks, India
Fully Managed Hosting Solution
Dedicated Web Server, Email & Collaboration http://www.i2k2.com/
+91-9654700996, +91-120-4663092 rahulbhatt@i2k2.com
Rahul Bhatt,
i2k2 Networks, India
Fully Managed Hosting Solution
Dedicated Web Server, Email & Collaboration
Ph: +91-9654700996,
+91-120-4663092
Email: rahulbhatt@i2k2.com
Web: http://www.i2k2.com
Comparison of Zimbra & Microsoft Exchange Server