What's new in Kerio Connect

Version 9.4.1p1 and Version 9.3.1p3

Released: July 4, 2022

We have released new patches for both KerioConnect 9.4.1 and 9.3.1 to fix a critical issue with KOFF.

Release notes

Fixes:

9.4.1p1 contains the following fixes:

• HTML formatted emails are displayed as plain text when using KOFF
• "The RPC server is unavailable" error when receiving certain types of attachments over KOFF

9.3.1p3 contains the following fixes:

• HTML formatted emails are displayed as plain text when using KOFF
• A problem has occurred in the 'XMPP Server' component error

Version 9.4.1

Released: March 16, 2022

Kerio Connect 9.4.1 is a release with several bug fixes and user experience improvements.

See the Release Notes below for a complete list of updates.

New Features:

• Security Vulnerability - Upgrade to Log4j 2.17.1

Fixes:

• 3CX meeting invitations are causing Kerio Connect to crash
• Unable to delete emails from public folders with version 9.4
• Shared folders with non-ASCII characters sync over ActiveSync regardless of preference
• Cannot search contact by phone numbers in webmail
• ActiveSync - Timezones are updated incorrectly when events are updated
• Filename has escaped characters when using Download All attachments in Kerio Connect Client
• Added support for Content-Security-Policy-Report-Only HTTP Header

Version 9.4

Released: January 13, 2022

Kerio Connect 9.4 is a release with several key security enhancements.

See the Release notes below for a complete list of updates.

New Features:

• Two-factor authentication
• Added application passwords for KOFF, IMAP and similar
• Added TLS options in GUI
• Integration with Let's Encrypt with auto-renewal functionality

Fixes:

• Broken Google Play icon shows in "sync app" options when integration with web mail
• KOFF not syncing emails over 1000 items on O365 version of Outlook
• MS Teams URL not showing in received emails
• Unable to set the timezone in the web mail client
• ActiveSync is returning search results in wrong order
• Implementation of Log4j 2.17.0
• Server OS information and Kerio Connect engine details are exposed
• Changes to "full name" property are not reflected in contacts
• Paper clip icon is showing incorrectly and is disappearing in KOFF & WebMail
• Unable to forward contact "as Outlook contact" using EAS protocol with Outlook
• Zoom meeting invites are not syncing with iOS calendar
• KOFF authentication fails when reverse proxy changes WWW-authenticate header to lowercase
• Email forwarded back and forth between two mailboxes are lost
• Delegated email addresses are removed from the "To" and "Cc" field when replying to an email
• Shared calendar names are not displayed correctly in the Apple calendar app in BigSur when using CalDav
• ActiveSync implementation allows to send duplicate messages
• Selecting "about" while logged in as the built-in admin results into "internal error"
• Sometimes email is missing when sync is done via ActiveSync
• Alternative address doesn't reply to Calendar invitations
• Kerio Connect mail client crashes with 32603 invalid response error
• Attachments are not being detected by the message filter for signed emails
• SMTP relay password has a length limit
• iOS tasks are failing to sync via ActiveSync protocol
• Webmail calendar event with attachment name using international characters will show file name in binary format
• Error in WebMail when Grammarly add-on detects a spelling mistake
• All-day tasks are synchronized one day earlier
• Resources can be reserved from external calendars only if they are made available to the entire server
• Kerio Connect client 9.3 for Windows no longer supports "Send to" function
• Event attachments with filenames having unicode characters appear as "application/octet-stream" file type with the name "=" after the event has been saved
• ActiveSync search command uses an invalid range when searching GALs on devices using iOS 11 and later
• Unable to remove contacts last name
• WebMail is incorrectly constructing base href hyperlinks
• Index rebuild causing email lost in differential backups
• Fixed wrong in Polish, Russian, Chinese and Japanese translations
• Amount of characters is limited in message filter configured to send automatic response
• Account added to eM client via EWS shows unusual timezone behaviour when editing events
• Forwarding an email with no body text will cause sender information to be lost
• Meeting requests created with use of Alias in KOFF will show actual sender instead of alias
• Items deleted from delegated inbox while using KOFF are permanently deleted instead of being moved to trash folder
• Signed emails are always detected as with Attachments
• Folder sharing not working over AD group
• Attachment with long file name encoded in base64 crashes Kerio Connect

Version 9.3.1 patch 2

Released: December 20, 2021

Release notes

Fixes:

• Apache log4j2 library upgrade to version 2.16.0 (fixing CVE-2021-44228 vulnerability)

Version 9.3.1 patch 1

Released: March 22, 2021

Release notes

Fixes:

• When email drafts are saved within Outlook via accounts setup with KOFF, the sender is saved as "Unknown" instead of the creator of the draft.

Version 9.3.1

Released: January 19, 2021

Release notes

Fixes:

• Unable to join MS teams meeting through Webmail Calendar

Version 9.3.0 p2

Released: November 30, 2020

Release notes

Fixes:

• Event attachments in Russian filename looses filename after uploaded
• Printing Attached Emails shows the Date of the Host Email Instead of the Attached Email
• SSL Certificate becomes untrusted after upgrading to 9.3.0 (CentOS, RHEL)
• AV Updates fail on CentOS, RHEL
• Webmail Inbox Notifications for shared mailboxes where the user is not Owner.

Version 9.3.0 p1

Released: October 26, 2020

Release notes

Fixes:

• All-day Calendar event displayed on the previous day in some timezones
• mailserver process crashes due to DKIM CheckSignaure (libdkimpp/libcrypto-kt.1.1)
• On iOS via ActiveSync error is returned ParseCalendarContent: Unknown method: 6
• Webmail crash with NestingLevel error

Version 9.3

Released: September 23, 2020

Release notes

New

• TLS 1.3 Support for HTTPS connections (EWS / ActiveSync / Web)
• TLS 1.3 Support for IMAPS connections
• TLS 1.3 Support for SMTPS connections
• TLS 1.3 Support for POP3 connections

Fixes:

• KoffRtfWrapper.exe process sometimes crashes
• Update checker does not fallback to HTTP
• User Office field is not synchronized from AD
• CardDAV Sync not fully working with Shared Folders on Mac OSX
• No desktop notification for INBOX subfolders
• Webmail bug - Cannot open MS Teams link in webmail
• AppleMail (EWS) crash when receiving an invite from Lotus Notes
• Calendar event attachment field is always in English
• Cannot change user public folder rights using a domain admin account
• Error when editing multiple users at the same time
• KOFF is unable to open resource as attached mailbox
• Paperclip attachment icon disappears from outlook and webmail for emails with attachments
• Attachment filter not blocking attachment
• TLSv1.2 is not used for client connections by default
• User in Outlook for Mac can create an all-day calendar event and it's synchronized with Webmail
• Webmail - Send an email with an active long text footer
• Webmail - Calendar attachments gets broken
• Webmail - task due date changes when the page is reloaded
• Webmail - Show more recipients in To: field does not work in the Czech language
• Editing meetings in Outlook for Mac causes hyperlinks to double

Version 9.2.12

Released: March 11, 2020

Release notes

Fixes:

• Crash with KThreadPool errors macOS
• Сannot install Kerio Connect Account Assistant in macOS Catalina
• KEMT | Userlist is empty when using Exchange 2013 and 2016
• Missing KOFF Account type because of Simplified Account Creation
• eM Client: When trying to share calendar, an unnamed error pops up
• Emails duplicated in a mailbox in certain scenarios
• AV fails to update in macOS
• Tasks are not synced anymore on iOS 13 with CalDAV
• KEMT fails to connect to Exchange 2013
• KOFF Unable to open the second shared folder (after upgrade)
• KOFF does NOT fully sync Deleted items from shared folders to the server.
• Kerberos to Active Directory authentication is not working on CentOS from mail client
• Kerio Connect Exchange - Event invites stripping hyperlinks

Version 9.2.11

Released: December 9, 2019

Release notes

New:

• KOFF performance improvements for searching items. Benefits mainly x64 platforms
• Open Java runtime is used for XMPP (repacing Oracle Java)

Fixes:

• Kerio Connect fails to start if luks.container file is missing
• Built-in Admin archive folder rights "checkbox" cannot be deactivated in Windows
• BCC is ignored in emails sent via ActiveSync
• A calendar invite from iCloud moves to another time
• Cannot deactivate access to the archive for users
• Chat is not working in Safari
• Kerio Connect trims large notes with no warning
• Delivery/Read receipts are not working with Outlook 2016/2019 Exchange ActiveSync profile
• eM Client: When trying to share calendar, an unnamed error pops up
• eM Client: When you want to upload a new distribution list on Kerio, error pops up and the upload won't be successful. Doesn't matter if you copy the list or create a new one.
• Email attachments missing using outlook with KOC
• GAL photos don't sync with AD
• Kerio Connect webmail login form does not contain anti-CFR token (XSS)
• Kerio Connect compatibility with The Bat! IMAP search
• Outlook for Mac reverts back change to appointment date from series
• Private Calendar Event's attachments are visible to all users
• Public calendar link broken after renaming calendar via BusyCal (MacOS)
• Reply messages contain extra strange numbers and characters
• Report Problem and Technical Support buttons are not working
• Secure Message signing does not work when the recipient is macOS Mojave Apple Mail
• The message when an attachment is blocked is not displayed in KOFF
• Timezone issue for Outlook 365 calendar invites
• Title for New Contact group, New task, and New note is incorrect
• When a user clicks to add extra disk space and Resizing Fails error occurs
• LDAP custom search Filter returns unnecessary results

Version 9.2.10

Released: July 31, 2019

Release notes

Fixes:

• Problem with sending emails from outlook after update to office version 1903 - 11425.20228
• Calendar not syncing with Outlook for Windows- Active Sync connection
• Mailbird client error failed to fetch emails
• Public folder rights - Invalid value
• Overview of shared sent items folder displays sender instead of the recipient address
• Verify your Identity pop up when using webmail over HTTPS
• Calendar events with Attachments causing issues with Active Sync synchronization
• Dragging a contact from "To:" field to e-mail body doesn't work
• LDAP Search no results when using non-standard fields
• Digital signature from Kerio Connect Client is not accepted by Gmail
• KOFF not loading correctly after upgrade to Outlook 1903 - 11425.20228
• Mailbird hangs during account configuration
• NMAP shows program name as Kerio
• Prompt on encryption when there is not enough disk space
• Drag a contact from To to email body does not work
• EWS: "DateTimeCreated" property is missing
• Domain folder rights are showing Invalid value

Version 9.2.9p2

Released: July 19, 2019

Release notes

Fixes:

• Problem with sending emails from outlook after update to office version 1903 - 11425.20228
• KOFF not loading correctly after upgrade to Outlook 1903 - 11425.20228

Version 9.2.9p1

Released: April 23, 2019

Release notes

Fixes:

• WebMail Contacts auto-completion is not working for previously created entries
• Finder is not responding MacOS 10.14
• Email with attached (Nested) email message not showing in KOFF
• LDAP-Replication gets only 200 contacts (configurable)
• Remote images are shown by default (disabled via config)

Version 9.2.9

Released: April 2, 2019

Release notes

New:

• Faster Contact List (webmail)
• Faster Global Address List (GAL)
• Added HTTP Security Headers

Fixes:

• Calendar not syncing with Outlook 2016 (Windows) - Active Sync connection
• Apple Mail (EWS) trying to sync deleted emails
• Garbled text in Outlook 2016 when using emoji character
• Mapping users from specific OU will break when editing the domain
• Webmail is treating a specific calendar invite as a normal email
• Incorrect PDF extension in Outlook 2016 and KOFF
• PDF attachments are missing in KOFF
• EWS Invalid GetItem response for meeting requests causing Mac Mail to crash
• “Data encryption” text is partially missing
• Cannot edit public contacts in MacOS 10.13 and 10.14 with Account Assistant
• Mapping users from a specific OU will break when editing the domain
• Calendar not syncing with Outlook 2016 (Windows) - Active Sync connection
• All day calendar events created in webmail span two days in KOFF in Windows 10 and Outlook 2016 (Polish edition)
• WebEx invitation is not triggering calendar entry
• Invitee's free/busy info mismatch in webmail and CalDAV client
• Missing "DateTimeCreated" property
• ActiveSync Incorrect HTTP status code Provisioning
• Spam tag issue Outlook
• Broken link in the Instant Messaging page
• Extra line space added when email is viewed in webmail
• Added EWS support for EM Client and MailBird

Version 9.2.8p1

Released: January 31, 2019

Release notes

Fixes:

• Webmail Edit as New is causing webmail crash
• Getting "Too many recipients" error after upgrading to 9.2.8
• Kerio Connect crashes when Max number of recipients is reached
• Mailing List should not be affected by Max recipients
• External calendar invitations disappearing after accepting in Outlook for Mac 16.20
• PDF attachments are missing in KOFF 9.2.8
• Reply to an email sent on behalf of a user is delivered to the delegate

Version 9.2.8

Released: December 26, 2018 

Release notes

New:

• Support for Mac OS Mojave
• Support for Outlook 2019

Fixes:

• Apple 10.13.1 Mail crash after - GetItem: Item #423: FAILED, Item was not processed due to a previous error., error code=14
• Calendar not syncing with Outlook 2016 (Windows) - Active Sync connection
• Out-of-Office response not sent when a move to folder rule is enabled against the sender
• Sending S/MIME encrypted mail from Kerio Connect Web Client results in some servers refusing the message with "Error 501: Line too long" in response to DATA
• Activesync: Marking a flag as complete does not show completed in other clients
• Apple Mail (EWS) trying to sync deleted emails
• Autodiscover wrongly generated when using custom HTTPS port
• The chat server isn't showing proper SSL Certificate
• Inconsistent behavior when replying to an email with a delegation.
• Improve Encryption partition creation time and safety
• Encrypted data is not removed during full uninstallation
• Kerio Connect Client "send to email client" not working
• Error in log ActiveSync MailData::ReadFromWBXml: Unknown Application data ID: 0x0219
• Kerio Account assistant hangs when configuring Outlook for Mac
• Cannot send to Exchange (or O365) user when Exchange (or O365) + KOFF account is added in Outlook
• Kerio Connect Web Client does not show unread items in the title
• Max. number of recipients in a message not working with KOFF
• Mac OS X mail Exchange is adding text as attachments
• Serbia country code for Certificate Request is incorrect
• Incorrect translation for Kerio Connect Client GUI (Croation)
• Sieve Script error when opening KOFF options
• SPF Connect should not block email on SOFT FAIL

Version 9.2.7p3

Released: September 20, 2018

Release notes

Fixes:

• Improvements in EWS operations
• Answering recurring event makes organizer attendee on IOS
• Multiple instances of avserver process
• Too many opened HTTP connections
• Missing attachment error in Webmail after waiting some time
• The first startup gives unknown IP addresses, from other Network class. instead of from DHCP
• Out-of-Office response not sent when a move to folder rule is enabled against the sender
• Mailserver process crashes because of corrupted metadata dbb and dbo files
• Sending S/MIME encrypted mail from Kerio Connect Web Client results in some servers refusing the message with "Error 501: Line too long" in response to DATA
• Brisbane Time zone event creation issue iCal/Mac Calendar issue
• Kerio Connect Web Client does not show unread items in the title
• Kerio Connect Web Client Email Preview should not update page title
• ActiveSync Calendar events move to the date when the invite is accepted

Version 9.2.7p2

Released: July 31, 2018

Release notes

Fixes:

• Kerio Connect Appliance fails to upgrade to 9.2.7
• Meeting organizer does not see updated status on iOS ActiveSync
• Attachments cannot be added to calendar events

Version 9.2.7p1

Released: July 24, 2018

Release notes

Fixes:

• Changed to Exchange ActiveSync 14 due to iOS compatibility issues
• Cryptosetup version 1.2.0 to support centos6 and Debian wheezy
• Unable to disable encryption in certain situations
• Shared domain calendars cannot be modified (Outlook on Mac)
• Setting up a meeting from iOS with ActiveSync does not send invitations (includes re-invites)
• Unable to add an attachment to the event in a calendars
• Unable to set license on Linux when Encryption is enabled
• Unable to upgrade Kerio Connect on VMware Virtual Appliance
• Debian APT was being changed to Buster
• AV Update can cause mailflow to stop

Version 9.2.7

Released: June 4, 2018

Kerio Connect 9.2.7 includes security enhancements to allow encryption of personal and sensitive data collected and stored by the product.

Release notes

New:

• Added support for encrypting personal and sensitive data on Linux installations

Fixes:

• ActiveSync All Day event issue on iOS
• Manually created CalDAV accounts can't add invitees
• Crash due to malformed email (To, Cc, Bcc, From) in Drafts from emails in ActiveSync
• ActiveSync created events not displaying in Outlook
• Maximum number of Recipients ignored ActiveSync
• Maximum number of Recipients ignored WebMail/HTTP
• Restore deleted emails
• Show more results calendar search
• Fix to Windows Timezones
• Windows 10 Calendar event now showing in WebMail
• Webmail unable to get focus on the body after removing the recipient from the list
• Unable to download chat or XMPP Archives
• Memory leak in tinydb_get_item_maybe_raw

Version 9.2.6p2

Released: May 3, 2018

Release notes

Fixes:

• Kerio Connect Account Assistant hang on Mac OS X Sierra (10.13)
• Memory leaks on CentOS

Version 9.2.6p1

Released: April 23, 2018

Release notes

Fixes:

• Kerio Connect Account Assistant hang on Mac OS X Sierra (10.13)
• Error when dismissing reminders in Chrome 64
• Several timezones are detected incorrectly by Connect Server
• Kero Connect Crashing after upgrade to 9.2.6

Version 9.2.6

Released: March 28, 2018

Kerio Connect 9.2.6 brings support for the latest version of Exchange ActiveSync (EAS), added support for MacOS High Sierra, and various customer reported fixes.

Release notes

New:

• Support for Exchange ActiveSync 16
• ActiveSync 16: Syncing the Drafts Folder
• ActiveSync 16: Calendar Attachments

Fixes:

• The delete button is not available in Context menu of WebMail
• Calendar event deleted from webmail remains on iOS device
• Fails to parse request from iPhone when the location is given
• created from WebMail are not getting synchronized to Calendar application on certain setup
• Connect Sync app on Android does not Sync in a certain configuration
• Timezone detected for (UTC +01:00) on Windows
• Send to Mail recipient from Windows Explorer context menu does not work
• Kerio Connect Account Assistant hang on Mac OS X High Sierra (10.13)Emails containing images with a link to another URL is opened incorrectly (MacOS)
• Slow HTTP POST vulnerability
• XSS Vulnerability
• AV fails to scan when it detects a special character
• Telephone number fields are not properly synced from AD for GAL Contacts
• High Reference Count - EWS Error in Log
• PDF attachments are converted to .bin for some emails
• Crash in Apple Mail after receiving an error message from Kerio Connect
• Bayes is not able to re-learn the message
• Kerio Connect: Email Search by Number - Size in search box not correctly displayed
• Kerio Connect: Email Search by Number - Time in search box not correctly displayed
• Kerio Connect vCard does not escape the semicolon in phone numbers
• Windows 10 Calendar Event not displaying in WebMail
• AntiSpam SMTP greeting delay doesn't apply to Secure SMTP
• Sub-folder in Sent Folder displays Emails Sender Address in Kerio Connect Client
• Process crash after a timeout when stopping busy service
• IM: Long incoming message is not scrolling on top
• Unable to select any font style other than Aerial and Default
• Responses from attendees are not removed from CalInbox when an event is changed
• Domain name in Connect can't contain multiple dashes in sequence
• Click on desktop notification should not change the position of New messages marker
• Default avatar changes after updating contact and refreshing
• Error after moving lots of contacts between two folders
• Drag and drop email from "to" to "email body" is buggy
• Shrink inline images to the viewport
• Default timezone set according to the browser, not server settings
• Spell checker: It's not possible to fix words that are in front of a special character
• It's possible to remove the last user with admin rights
• Updated Boost to improve html2plain conversion
• Issue when uploading filename with invalid characters in the name
• Strange character in webmail causes email not to be displayed
• General fixes and improvements

Version 9.2.5p3

Released: September 28, 2017

Release notes

Fixes:

• Fixed issues with Kerio Antivirus

Version 9.2.5p2

Released: September 27, 2017

Release notes

Fixes:

• Fixed issue with installer on Windows

Version 9.2.5p1

Released: September 26, 2017

Release notes

Fixes:

• Fixed issue with upgrading from older versions

Version 9.2.5

Released: September 22, 2017

Kerio Connect 9.2.5 provides fixes and product improvements.

Release notes

Fixes:

• Cursor goes to the bottom when replying to email in Firefox
• Errors with webmail interface
• Account Assistant for macOS incorrectly configures account causing password prompts
• Javascript files take long time to load- Account Assistant, multiple shared accounts, Contacts app
• FORGED_YAHOO_RCVD is evaluated incorrectly and flags messages originating from valid Yahoo servers
• FORGED_MUA_MOZILLA spam assassin rule is not correctly evaluated or is too aggressive
• NO_RDNS_DOTCOM_HELO is evaluated incorrectly and marks messages originating from servers with reverse DNS
• Links are rendered incorrectly in Kerio Connect 9.2.4
• Opened folders Bug

Version 9.2.4

Released: July 11, 2017

Kerio Connect 9.2.4 is a maintenance release that provides fixes, and adds support for Windows Server 2016

Release notes

Kerio Connect

New:

• Add support for Windows Server 2016

Fixes:

• Kerio Connect in Perth timezone incorrectly detects timezone as
• Kerio Connect Engine doesn't work on MacOS
• TNEF decoder corrupts whole email if signed
• Last login is not updated in user statistics
• Message opened in KOFF in extra Window reports MAPI Error Message Outlook 0x00040680 MAPI_W_PARTIAL_COMPLETION when deleted in other client
• Print view is shifted by one hour in Calendar print view
• Some events appear in Webmail bit not in Outlook using KOFF connector
• Links are rendered incorrectly in Kerio Connect

Kerio Connect Client

Fixes:

• Kerio Connect client does not allow email with single-letter domain
• XSS vulnerability in email preview with links containing "mailto:" and "http://"
• UI redressing / CSS injection vulnerability with body *link attributes
• XSS vulnerability in email preview with body attributes
• Right click links containing credential fires error on IE/Edge
• Copy/Paste from Excel into Contacts fails to separate items

Version 9.2.3

Released: April 27, 2017

Kerio Connect

• Fixed updating of Kerio Antivirus if update directory or downloaded update files are held by another process.
• Fixed rare interruption of upgrade process when upgrading from Kerio Connect 9.1 and older.
• Fixed potential stability problem during instant messaging (XMPP) server initialization.
• Some meeting responses to invitations could not be successfully sent from devices with iOS 10.3 using Exchange ActiveSync.

Kerio Connect Client

• Fixed CVE-2017-7440 (CWE-693) vulnerability.

Kerio Connect Client application for Mac and Windows

• Fixed CVE-2017-7440 (CWE-693) vulnerability.

Kerio Connect Administration

• Fixed Japanese translation.