Kerio Connect

Kerio ConnectKerio Connect is the award-winning, low-overhead alternative to Microsoft Exchange. Kerio Connect makes email, calendars, contacts and task management easy and affordable, and integrates Instant Messaging into your business tools. It gives users immediate, secure access to communications anytime, anywhere, on any device – without complexity or expensive overhead.

a better alternative

Kerio Connect – The Exchange Alternative

Microsoft Exchange – the 1,000 lb Gorilla

Microsoft Exchange is powerful software, but it has its place – in the enterprise. Microsoft Exchange is an enterprise-class messaging and collaboration server and along with it comes expensive hardware, overly complex administration and excessive IT overhead.

But what about Small Business Server (aka SBS) you ask? While it sounds like it’s intended for smaller organizations, don’t be fooled. SBS is marketing at its best – an enterprise-class product merely packaged, priced, and positioned for the small business market.

Whether Exchange or Small Business Server, it’s overkill and it requires far too much resource investment for many of today’s medium and small businesses like yours.



What makes Kerio Connect different

Kerio Connect on the other hand is engineered to address the needs of the work horses of today’s economy – businesses like yours. We focus on solving your IT needs, so IT doesn’t get in the way of your business.

As a result, we’ve done away with the complexity, overhead and excessive costs, and focused on building the world’s best and most flexible messaging and collaboration server for you, at a total cost of ownership you won’t even think about.

When you compare the hardware requirements, operating system requirements and licensing costs alone, without a doubt, Kerio Connect is the clear winner.



6 reasons why businesses, IT Consultants and VARs choose Kerio Connect over Exchange :

1. Lean.  Everything Exchange does, without the IT overhead
2. Flexible.  Deploy on Windows, Linux, Mac, VMware, Parallels or HyperV
3. Mobile. Broader mobile device support – sync public folders, shared calendars and contacts
4. Stable.  Focus on your business – not on downtime and unexpected costs
5. Simple.  Set-up, administration, and maintenance is a breeze
6. Value.  Lower licensing costs, lower hardware requirements, lower service costs

always connected

Kerio Connect client – Web mail reinvented

Away from the office? Don’t have access to your email client or just don’t want to pay for one? The, completely redesigned Kerio Connect client, gives you free and instant access to your email using virtually any web browser on any device.

  • Manage email, calendar appointments, contacts, tasks & notes all from one intuitive web application
  • Easy message handling – sort messages, quickly mark messages as read/unread, flag for follow-up, trash or spam
  • Drag and drop attachments
  • 2-6 week calendar overview
  • Instantly create meetings from email messages


Kerio Connect Instant Messaging

Kerio Connect Instant Messaging brings hassle-free IM to everyone in your organization without any configuration.

  • Send instant messages, create/join group chat rooms, share files or hold a live audio or video chat
  • Automatically generate IM Contacts with photos from GAL
  • Supports popular IM clients – Messages and iChat for Mac OS X and Pidgin for Windows are recommended
  • Check your colleagues availability with real-time presence

Sync email, calendars & contacts on the mobile device of your choice.

iPhone. iPad. Android. BlackBerry. Windows Phone. Palm. Whatever the device or OS, Kerio Connect most likely supports it. Virtually any device will synchronize wirelessly over the air with your Kerio Connect server.

  • Synchronize email, calendars and contacts in real-time with direct push
  • Choose public and shared folders to sync to your device
  • Sync shared calendars and contacts to iOS devices – Exchange and Google can’t even do that!
  • Supports synchronization through IMAP/CalDAV/CardDAV open stands or with Exchange ActiveSync

advanced email protection

Email Security

SSL Encrypted Secure Communications

Kerio Connect protects corporate information with strong SSL encryption on all inbound and outbound email. Whether accessing Kerio Connect from a web browser, mobile device or desktop client such as Outlook, every connection and communication is encrypted, preventing outsiders from capturing passwords and accessing email content.

S/MIME Security even on iOS 5 Devices

With support for Secure MIME (S/MIME) in most email clients, including iOS 5 devices configured using Exchange ActiveSync, Kerio Connect extends its high level security to your mobile team. Using a S/MIME supported client or device, rest assured that sender/receiver identity is authentic, and that email content and attachments are locked down in case a message falls into the wrong hands.

Robust Anti-Spam Protection

Is your inbox inundated with junk e-mail? Spam isn’t just an annoyance, it can pose a serious security threat to your organization’s network. The built-in Anti-Spam engine in Kerio Connect rids your inbox from all that un-wanted, and potentially malicious email. Protect from Directory Harvest Attacks (DHA), phishing and spoofing with Bayesian, Heuristic and SURBL spam filtering techniques, Internet blacklist servers, custom whitelists and blacklists, greylisting cloud service, SMTP restrictions and more.

Sophos Anti-Virus Protection

The integrated Sophos Anti-Virus engine in Kerio Connect seamlessly protects your network from viruses, Trojans, worms, spyware and adware commonly piggy-backed on email traffic. One of the most efficient virus scanning engines available, Sophos Anti-Virus catches all malware in a single scan and automatically guards against zero-day threats with minimum impact on memory and system performance.

Password Guessing Protection

Kerio Connect gives administrators granular control over protecting users from outside attackers attempting to guess weak passwords. Block IP addresses suspicious of account and password guessing attacks, block user accounts that have been targeted by password guessing attacks, or even specify to never block password guessing attempts from local clients if you have some forgetful users.



Server Backup and Data Recovery

With Kerio Connect, you’re protected in the event of a hardware failure and from users inadvertently deleting email. Administrators can schedule full or differential message store backups to automatically run on specified days and times, without taking the server off-line. Receive email notifications when backup has completed, or if there were any interruptions.

Easily restore server configurations and user data onto a new server, or integrate with third-party high availability solutions for maximum uptime. And when you need to recover emails from a users emptied deleted items, no problem. You’ll have them back in just a few clicks.



Archiving for Compliance and Governance

The built-in email archiving feature in Kerio Connect allows organizations to capture and store all incoming, outgoing and relayed messages for both local and remote sender/recipients. Whether regulated by one of the many governing bodies or simply want to maintain an email archive for potential legal discovery, Kerio Connect makes it easy for all organizations to follow archiving best practices.

Administrators can choose to archive on-premise to a local archive directory, or easily integrate with third-party archiving solutions and non-rewriteable media for legal compliance. Use Kerio Connect client for search of on-premise archive, or use a third party legal discovery service for more robust search and audit.

Retention Policy

Don’t let mail hoarders consume all your storage space. Flexible retention policy options allow administrators to create policies to automatically delete old email items. Configure policies by domain or by individual user, select which folders to include in the policy, and set the age of items to be deleted in days or years.



Whether businesses need total control over their mail server, or they simply want reliable full-featured email service, Kerio Connect offers the broadest deployment options and the widest client side access available.

On Premise

Kerio believes in freedom of choice. Whatever your rationale, if you choose an on-premise deployment, we’ve got you covered. Whether you run Windows, Mac, Linux or a virtualized environment in the back office, there is a Kerio Connect installation package available for the host OS or hyper visor to suit your needs.

In the Cloud

You’ve decided the cloud is right for you, but which cloud email service makes the most sense? Most cloud services today are public. Kerio takes a slightly different approach to cloud email, offering both shared and private cloud environments, both available as a pay-as-you-go service through Kerio’s partner network.

Supported Clients

Need a mail server as dynamic as your organization? Kerio Connect works seamlessly with the desktop clients that your teams use. Your marketing team uses Apple Mail and Outlook for Mac, but your sales and accounting teams use Outlook on PCs? No problem. Kerio Connect works with them all. Use Outlook at the office but don’t have Outlook at home? No Problem. Access your email and manage your appointments with the newly designed Kerio Connect client from any browser.



Kerio Connect’s fully functional web-based administration interface lets you easily configure your mail server settings no matter which deployment option you choose. And with the iPad optimized web admin interface you can fully manage the server from virtually anywhere.

Tackle routine tasks like reset a user’s Password or send/clear Message Queue items from the coffee shop. Or create and apply User Access Policies, tweak Spam Filter settings, or browse logs to troubleshoot the mail server with ease from your son’s ball game. With multi-gesture support, scroll logs faster with multiple fingers, two-finger tap to get contextual menus, and toggle to hide the menu tree to maximize screen real estate.



With simplicity as one of our core values, we want to make switching to Kerio Connect as fast, easy, and painless as possible. Whether you’re migrating from an Exchange environment, an IMAP environment, or something else, check out the free migration tools we have available.


Server Requirements

Operating System Hardware

Microsoft Windows

32-bit versions:
Microsoft Windows 7
Microsoft Windows Vista (Business, Enterprise or Ultimate edition)
Microsoft Windows XP (SP3 or SP2)
Microsoft Windows Server 2012 R2
Microsoft Windows Server 2012
Microsoft Windows Server 2008 R2
Microsoft Windows Server 2008
Microsoft Windows Server 2003 (SP2)

64-bit versions:
Microsoft Windows Server 2012 R2
Microsoft Windows Server 2008 R2

Minimal HW configuration (1-20 users):
CPU 1 GHz, 1 GB RAM, 40 GB of free space for message store and backup

Recommended HW configuration (20-100 users):
CPU 2GHz, 2GB RAM, 160GB of free space for message store and backup

Recommended HW configuration (100+ users):
CPU 2.8GHz 64-bit Quad Core, 8 GB RAM, 200GB+ of free space for message store and backup

Minimal HW configuration (1-20 users):

Mac Intel Core2Duo, 1 GB RAM, 40GB of free space for message store and backup

Recommended HW configuration (20-100 users):
Mac Intel Core i5, 4GB RAM, 160GB of free space for message store and backup

Recommended HW configuration (100+ users):
Mac Intel Core i7, 8GB RAM, 200GB+ of free space for message store and backup

32-bit versions:

Red Hat Enterprise Linux 5 / 6, CentOS 5 / 6
openSUSE 11.2-11.4, 12, SUSE Linux Enterprise Server 11 SP2
Debian 6.0, 7.0
Ubuntu 10.04 LTS and 12.04 LTS

64-bit versions:
Red Hat Enterprise Linux 6, CentOS 6
openSUSE 12, SUSE Linux Enterprise 11 SP2
Debian 6.0, 7.0
Ubuntu 12.04 LTS

Mac OS X 10.9 Mavericks
Mac OS X 10.8 Mountain Lion
Mac OS X 10.7 Lion
Mac OS X 10.6 Snow Leopard
Mac OS X 10.5.8 Leopard

*Server and Desktop editions

VMware Virtual Appliance

Kerio Connect VMware Virtual Appliance comes with a pre-installed OS. Works with:

Workstation 6.5 or 7.0
Server 2.0
Fusion 2.0 or 3.0
Player 2.5 or 3.0
ESX 3.5 – 4.1
ESXi 3.5, 4.0 or 5.0

The same requirements as for the standard installation + the host OS overhead.
Directory Server Extensions
Kerio Active Directory Extension 32-bit and 64-bit
Microsoft Windows Server 2003 (SP2)
Microsoft Windows Server 2008
Microsoft Windows Server 2008 R2
Microsoft Windows Server 2008 R2 Foundation
Microsoft Windows Server 2012

Install on Active Directory Server for user management, import and authentication in Kerio Connect.
Kerio Open Directory Extension
Mac OS X 10.8 Server
Mac OS X 10.7 Server
Mac OS X 10.6 Server
Mac OS X 10.5 Server

Install on Apple Open Directory Server for user import and authentication in Kerio Connect.
Web Administration
Web Browsers
Internet Explorer 7, 8, 9 and 10
Google Chrome
Safari 5, 6 and 7
Safari on Apple iPad
Firefox 4 and higher



1. What’s included with a new purchase?
Kerio products are licensed as a server license plus user licenses. The server license includes 5 users. Additional user licenses are sold in packs of 5 users. A new license purchase comes with a 1-year Software Maintenance contract, valid from the registration date, entitling the user to product updates for the first year. An annual Software Maintenance renewal is required to continue receiving product updates after the first year.

For sales in Russia, please be aware that product updates provided to a customer who has purchased a FSTEK-certified version of any Kerio product may not be FSTEK certified.

2. Optional features
Kerio Connect and Kerio Control are offered with integrated Sophos Anti-virus as an option. Kerio Control also includes the integrated Kerio Control Web Filter for enhanced web content filtering as an additional licensing option.

Exchange ActiveSync protocol is available as an optional paid service of Kerio Connect.

3. How are users counted?
For all intents and purposes, in all Kerio products, a user is a person. There are some slight variations in how a user is defined in each product as specified below.

Kerio Connect
A user is a mailbox. The number of user licenses needed is the total number of user mailboxes created in Kerio Connect across all domains. The number of aliases, mailing lists, domains, groups or resources is not limited and does not count toward the license.

Kerio Control
A user is an account with login access to Kerio Control and its services. An individual user can connect from as many as 5 devices represented by an IP address, including VPN clients, mobile devices, IP phones, desktop computers, etc.

If an individual user needs to connect from more than 5 devices, an additional user license will be required to support the additional devices.

To ensure all users are able to access the network securely and be adequately protected, it is required that a license be purchased for each user that will need to login to Kerio Control, including guests to the network.The admin account does not count as a user.

Kerio Control Web Filter
The number of users in the Kerio Control Web Filter must correspond to the number of users in the Kerio Control license.

Kerio Operator
A user is an account with login access to Kerio Operator and its services. The license key limits the number of users. The total number of extensions is also limited to at most three times the number of licensed users.

4. EDU/GOV Licensing
Customers from the education sector are entitled to special EDU pricing. Discounted GOV pricing is also available to non-profit or government organizations. Please contact sales for pricing information.



1. Why purchase Software Maintenance?
Access to the latest version of the product
Protection against the latest security threats
Take advantage of the newest technology available
No financial surprises when new versions are released

2. How Software Maintenance works?
Software Maintenance entitles the license holder to all product version updates free of charge throughout the duration of the Software Maintenance term.*
Initial software license purchase comes with 1 year of Software Maintenance valid from the registration date. 1 additional year of Software Maintenance may be purchased at the time of initial license purchase for a maximum of 2 years of Software Maintenance.
1 year of additional Software Maintenance may be purchased at any time, provided there is less than 1-year remaining on the current Software Maintenance term.
Up to 2 years of Software Maintenance may be purchased on the Software Maintenance renewal date.
Software Maintenance should be bought and registered before expiration.
When Software Maintenance is registered after the expiration date, the Software Maintenance period is extended by exactly 1 year from the expiration date.
Start date is the date when the product was originally registered via the Kerio web page or in the product’s administration interface.
* Note: For sales in Russia, please be aware that product updates provided to a customer who has purchased a FSTEK-certified version of any Kerio product may not be FSTEK certified.

3. What happens if my Software Maintenance expires?
It is still possible to use the product, but you will not be able to upgrade past the last version released when your Software Maintenance was still valid.
Integrated Sophos Antivirus in Kerio Connect and Kerio Control will stop working 60 days after SWM expiration.
Kerio Control Web Filter will stop working.
IPS/IDS engine in Kerio Control will not receive new rule updates.
Exchange ActiveSync in Kerio Connect will stop working.
Expired Software Maintenance can be brought up to date by purchasing missed years.
We strongly recommend renewing your Software Maintenance to be protected from all security threats, including the newest and most dangerous ones.

4. Software Maintenance Pricing
The cost of Software Maintenance for 1 year is approximately 33% of the current new license price.

5. User count increase and Software Maintenance
When you increase the number of users on your license, these additional users will be covered by Software Maintenance until the server product expiration date.

6. How do I register my Software Maintenance?
After purchasing Software Maintenance, you will be given a registration key(s). You must register the key(s) either from the product or at our website.

If you received a single registration key which is the same as your original registration key, enter that in the first screen of the registration process and continue all the way through.

If you received a series of keys (none of which is your original key) you should enter your original key in the first screen of the registration process and in the next screen add the newly purchased registration keys.

7. Can I change or move a registered license to another system?
In some cases, you may wish to upgrade hardware or change operating systems. The license may be registered to another system, and any updates to the registration (e.g. operating system) will be performed during registration. Before registering a license on a new system, you must remove the license from the previous server by either uninstalling the software or taking the system permanently offline.

8. Are there any limitations to the software with a trial license?
All software versions of Kerio products are available as a fully functional 30 day trial for unlimited users. This includes add-on services such as the Sophos Anti-Virus and the Kerio Web Filter. When the 30 day trial expires, a valid license must be installed via the Administration interface to resume functionality.

Reference Materials

Kerio Connect - Datasheet
Kerio Connect - Datasheet
Kerio Connect.pdf
645.8 KiB







 Some of Kerio clients