1. 1
What’s New
March 2017
Contains proprietary and confidential information owned by Synacor, Inc. © / 2016 Synacor, Inc.
ZIMBRA 8.7.X

2. 2
TODAY’S DISCUSSION
Server Features
• Zimbra Package Repository
• Postscreen
• SSL SNI for HTTPS
Security Improvements
Two-Factor Authentication
EWS Improvements
Unified Communications
Other notable enhancements
Zimbra Desktop 7.2.8
Q&A

3. 3
ISSUES RESOLVED SINCE ZIMBRA 8.0
1854
2832
970
2284
0
500
1000
1500
2000
2500
3000
8.0 8.5 8.6 8.7
Bug Fix

4. 4
BACKEND FEATURES

5. 5
ZIMBRA PACKAGE REPOSITORY
Zimbra 8.7+ now uses a package
repository for the majority of 3rd party
libraries
• Smaller installer size
• Zimbra can push rapid updates to 3rd
party packages without having to
release a patch, ideal for security
updates
• Customers can update 3rd party
packages to latest version without
having to apply patch
• Will be expanding this concept to the
rest of the product over time 0 200 400 600 800 1000 1200
Installer Size in MB
8.6
8.7

6. 6
ZIMBRA PACKAGE REPOSITORY

7. 7
POSTSCREEN
• Pre-screening process for clients that implements tests to reduce the load on the
SMTPD process
• By keeping spambots away, Postscreen leaves more SMTP server processes
available for legitimate clients, and delays the onset of server overload
conditions
• Zimbra Collaboration Postscreen maintains a temporary white-list for clients that
have passed a number of tests. When an SMTP client IP address is whitelisted,
Postscreen hands off the connection immediately to a Postfix SMTP server process.
This minimizes the overhead for legitimate mail.

8. 8
ZIMBRA ARCHITECTURE W/O POSTSCREEN

9. 9
ZIMBRA ARCHITECTURE WITH POSTSCREEN

10. 10
POSTSCREEN RESOURCES
Whitepaper Technical Wiki

11. 11
SSL SNI ARCHITECTURE

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SSL SERVER NAME IDENTIFICATION (SNI) FOR HTTPS
• Zimbra SSL Server Name Indication (SNI) allows the proxy server to submit various
certificates in the same IPv4 address and TCP port number, which allows multiple
domains (HTTPS) to be served at the same IP address without having to use the
same certificate.
• Zimbra SSL SNI is excellent for service providers who service numerous domains.

13. 13
SSL SNI RESOURCES
Whitepaper Technical Wiki

14. 14
SECURITY
IMPROVEMENTS

15. 15
SECURITY INFORMATION
• As always, it is highly recommended that you revisit settings after upgrading to
ensure that values are set as expected/desired in your environment and security
settings meet your requirements.
• https://wiki.zimbra.com/wiki/Security/Collab/87
• https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
• PEN Test – Netragard's final report available
(20160613-Netragard-Report-ZCS-8.7-final.pdf )

16. 16
TWO-FACTOR AUTHENTICATION
• Time-based one-time passcode
(TOTP) security layer
• App-specific passwords for support
across all clients
• Reduces successful user ID theft,
fraud, and phishing attacks
• COS, Domain, and User feature
• Admins can require use

17. 17
DEMO

18. 18
TWO-FACTOR AUTHENTICATION RESOURCES
Whitepaper Technical Wiki

19. 19
MISCELLANEOUS SECURITY IMPROVEMENTS
8.7 SSL Related Changes
• SSLv3 disabled (OpenJDK, OpenSSL)
• Default 2048b DH Parameters (OpenSSL)
• Removed RC4 cipher
• Enabled Nginx SSL Session Cache (resumption)
• zmlookup via HTTPS (default port 7072)
• HTTPS SNI Support (zimbraReverseProxySNIEnabled)
8.7 Security Other
• saslauthd on port 7073 (SMTP auth vs. ZWC, etc.)
• multi-domain enhancements
• many third party package updates

20. 20
EXCHANGE WEB
SERVICES (EWS)

21. 21
EWS ENHANCEMENTS IN 8.7
Bug 95132
Signed/Encrypted
Emails appear as
normal in Mac
Outlook
Bug 95988
Calendar.app via
EWS setup doesn’t
work with ZCS
Calendar
Bug 98235
Support for Office
2016, Outlook for
Mac
55 fixed Bugs for EWS in 8.7

22. 22
UNIFIED
COMMUNICATIONS

23. 23
UNIFIED COMMUNICATIONS – PRESENCE

24. 24
UNIFIED COMMUNICATIONS — VOICEMAIL

25. 25
UNIFIED COMMUNICATIONS — MAKING A CALL

26. 26
8.7 MISCELLANEOUS
IMPROVEMENTS

27. 27
Bug 101582
Support for Office
2016 with Zimbra
Connector, ZCO
Bug 97334/97335
Accessibility for Calendar and
Contacts on Web Client
Bug 97773
Upgrade to postfix
3.0 series
Bug 96261
Add localization for
Lao [Lo]
Bug 101192
Disable links
within spam
Bug 95484
Support for
IE12

28. 28
8.7.1 MISCELLANEOUS
IMPROVEMENTS

29. 29
Bug 103683
Add support for
Ubuntu 16.04 LTS
Bug 105134
Outlook 2016 Mac EWS
expanding distribution list
crashes Outlook
Bug 105945, 105942, 107024
and 106204
Solved different Bugs which
prevented to run a successful
Update/Upgrade to ZCS 8.7
Bug 106162
8.7 requires briefcase to be public if image is inside signature

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8.7.2 MISCELLANEOUS
IMPROVEMENTS

31. 31
Bug 104578
Pagination support
for SyncGalRequest
Bug 104127
Mail list view is not refreshed
when deleting mails in
message view
Bug 107106
Convertd failed after
upgrade to 8.7.1 from
8.7.0
Bug 107153
Image within signature is broken in reply/forward window

32. 32
8.7.3 MISCELLANEOUS
IMPROVEMENTS

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Bug 107623
EWS sync broken
when SOAP
response is large
Bug 101023
zimbraHelpAdvancedURL,
zimbraHelpStandardURL and
zimbraHelpAdminURL does
not work
Bug 106379
"/opt/zimbra/libexec/zmfixp
erms --verbose --extended"
changing
/opt/zimbra/common/sbin
permission to zimbra:zimbraBug 107058
Fix "Unescaped left brace in regex is deprecated, passed through in
regex; marked by <-- HERE in m/${ <-- HERE zimbra_home}/ at
/opt/zimbra/libexec/zmupgrade.pm" for UBUNUTU16

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8.7.4 MISCELLANEOUS
IMPROVEMENTS

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Bug 106811
XXE [CWE-611]
Bug 104278
While printing mails from
ZWC in IE and Firefox, word
wrapping is splitting words
between two lines.
Bug 107635
oo_linux_install_path is not
set in fresh installation

36. 36
8.7.5 MISCELLANEOUS
IMPROVEMENTS

37. 37
Bug 81415
New S/MIME Zimlet
Technical Preview,
no Java applet
Admin Guide in GitHub
We are moving our
Documentation to ASCIIDoc
on GitHub, where you can
grab or improve it
Bug 107583 and 106285
- 8.7.2 calendar month view
broken for multiple day
spanning events and
- Horizontal scroll bar works
incorrectly in Calendar
Bug 107058
Print issue:text gets cut on right when printing mails using IE

38. 38
8.7.6 MISCELLANEOUS
IMPROVEMENTS

39. 39
Bug 107797
Starting Zimbra Collaboration
8.7.6, Zimbra includes a free
and GPLv2 Chat product
embedded inside Zimbra
Bug 107798
Starting Zimbra Collaboration
8.7.6, Zimbra includes a free
and GPLv2
OwnCloud/NextCloud product
embedded inside Zimbra
Ephemeral backend
ZCS 8.7.6 release includes a beta
release of a major change in
Zimbra architecture that allows
enabling protection against CSRF
and cookie-reuse attacks without
increasing load on LDAP
Security fixes
Improper limitation of file paths [CWE-22]
Improper handling of privileges [CWE-280]

40. 40
8.7.7 MISCELLANEOUS
IMPROVEMENTS

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Bug 107824
All context menu options
stopped working after deleting
trashed appointment and trying
to take action from user
calendar's appointment
Bug 107825
Weekly Recurring Meeting not
getting synced in Outlook 2016
Bug 106438
Caldav Shared Calendar Sync not
working correctly on latest mac
versions

42. 42
8.7.9 MISCELLANEOUS
IMPROVEMENTS

43. 43
Feature improvements
- Added full working Search feature:
- Smart case insensitive query
parsing
- Preview and most operations
available
- Added NewFolder button in Move
Dialog
- Added Zimbra Drive icon and
browser tab title
- Added some checks to prevent
illegal actions
Bug 107449
EWS: Resolve Name should
return all the contact
information
Bug 107946
WS: Map all attributes returned
in AD search result to Contact
in ResolveName response
Bug 107891
Upgrade from 877 to 878 failed
due to ldap schema violation
Bug 107899
Upgrade from 850 to 878 failing
for RHEL6
early release

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8.7.10 MISCELLANEOUS
IMPROVEMENTS

45. 45
ZCO 8.7.10 has been
released
Up to 11 Bugs fixed for this
version
Bug 107584
No data under "Download"
directory after fresh
installation or upgrade
Bug 107878
XXE [CWE-79]

46. 46
8.7.11 MISCELLANEOUS
IMPROVEMENTS

47. 47
Bug 107979
S/MIME certificate not seen
in Contact Properties
Bug 102930
EWS Sharing - Handle sync of
shared folders on remote
node
Bug 107901
XXE [CWE-384]

48. 48
ZIMBRA DESKTOP
v7.2.8

49. 49
ZIMBRA DESKTOP 7.2.8
Two factor authentication
Starting in Zimbra Desktop 7.2.8, we support it natively on our Desktop. Requires ZCS 8.7 and NE
Password Lock
If a user enables this feature, access to Zimbra Desktop becomes password protected, and the user needs to enter a
Zimbra account password.
Auto Archive
Using this feature, old emails are archived locally, to local folders, and these emails are deleted from the server
automatically. A really handy option to keep our Mailboxes at the minimum weight at the Server level.
Support for Traditional Chinese (Taiwan) Language
For all the Taiwanese speakers we have good news! Now Zimbra Desktop 7.2.8 and above supports Traditional
Chinese (Taiwan). 歡迎光臨

50. 50
ZIMBRA DESKTOP 7.2.8
Two factor authentication
We introduced Zimbra Collaboration 2FA since v8.7, and
starting in Zimbra Desktop 7.2.8, we support it natively on our
Desktop client as well. The first step is to configure 2FA on the
Web Client.
Zimbra Two-Factor authentication requires an upgrade of your
Network Edition License Key, which is free of charge if you
have a valid License. Contact your regional sales manager
Then when you try to add an account protected already with
Zimbra 2FA, or if you had one already added on Zimbra
Desktop and configure 2FA later, the Zimbra Desktop will
prompt you for a Code from one of the TOTP applications.
Once you add a valid 2FA code from a TOTP application, you
will be able to see all of your accounts and launch the Desktop

51. 51
ZIMBRA DESKTOP 7.2.8
Password Lock
Starting with Zimbra Desktop 7.2.8, the end user can
protect Zimbra Desktop with a password. You will find this
new feature in Preferences > All accounts > General >
Enable Password Lock
Once enabled, you will see a new lock icon on the top bar.
You can click on that icon or just close Zimbra Desktop to
be prompted for your Zimbra Desktop main account
password.
This is the window that will prompt you for the main
account password. This is a really useful way to protect your
Zimbra Desktop content, preventing it from being read by
another user who might have physical access to the
computer.
After a successful login, you will see a banner message on
the top bar saying Password Verified

52. 52
ZIMBRA DESKTOP 7.2.8
Auto archive
Using this feature, old emails are archived locally, to local
folders, and these emails are deleted from the server
automatically. A really handy option to keep our Mailboxes at
the minimum weight at the Server level.

53. 53
Q&A
Thank you!