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Does old version of KOFF work with the most recent server version of Kerio Connect
XMPP Service and Fulltext Errors After Upgrade to 9.3.1 patch 2 (6097)
Kerio Connect RPM Installation Failure
Kerio Connect Stuck during Upgrade
Debian Stretch to Buster OS upgrade for Virtual Appliance
Upgrading Kerio Connect older than Version 9.0.0
See MoreKerio Connect Installation for VMware
Microsoft Teams Calendar integration in Kerio Connect
Unable to install Kerio Connect Account Assistant on MacOS Big Sur
Is Kerio Connect Compatible with Apple M1 Machines?
Installing Kerio Connect on Virtual Machine
Collecting KOFF and KCC Installation Logs on Windows
See MoreKerio Update Service Issue when Upgrading to KOFF version 10
Outlook clients not working: RPC server is unavailable
Unable to Delete Emails from User Shared Folders in Kerio Connect
MAPI_E_OBJECT_CHANGED Error in Outlook
Multiple Emails Generated from Calendar Invitation Responses on iOS Devices
Outlook search not working: "Search index is offline"
See MoreIssues while connecting to the server via HTTP
Appointments entered on phone not appearing on Outlook Calendar
Error "main.cpp: Cannot start remote admin server" seen in logs
Unable to update KOFF on Windows XP computers
Unable to install Account Assistant on Catalina 10.15.7 even after disabling SIP in Terminal
DNS Records - Troubleshooting Article
Generating a 1024-bit DKIM key when not able to add the default 2048-bit DKIM key into DNS
Receiving large amount of spool emails despite enabling SPF function
Getting matched private key for the public key of DKIM
What is the effect of using p=none when configuring DMARC for a domain?
Kerio Connect SPF is rejecting emails incoming through Spam Filter service provider
See MoreFailed to issue Let's Encrypt certificate: Failure / timeout verifying challenge passed
Failed operation, internal error. Let's Encrypt client is not initialized
Authentication Issue: The token passed to the function is invalid. (87) Wrong parameter.
Setting up the Let's Encrypt SSL certificate in Kerio Connect 9.4
Recovering Access to 2FA Secured Account
See MoreUnable to receive any emails after turning off Open Relay
Should the Spam URI Realtime Blocklist (SURBL) check be enabled?
What is the best setting for Kerio Advanced Anti-Spam filter?
Anti-Spoofing not preventing Spoofed Spam Messages from a certain IP
Compromised Servers - Troubleshooting Article
See MoreFilesystem Errors on Linux Server
Best practices and considerations for scaling and performance optimization
Server webmail is overloaded or inaccessible
Kerio engine service only starts after removing and reinserting disk
Downloading emails is taking extremely long for Outlook for Mac user
Resolving "Secure Web Admin failed to start on port: 0"
See MoreCustomizing Calendar Event Labels/Categories
Shared Calendars - Troubleshooting Article
User availability is not showing correctly in Apple Calendar on Big Sur
Unable to Set Up Reminders for a Public Calendar Event
Multiple Calendars with same Name seen in Outlook
Handling calendar invitations from Microsoft Teams
See MoreOutbound Email Delivery - Troubleshooting Article
Unable to Email O365 Domain due to SMTP Error “451 4.4.4 Temporary Server Error”
What POP3 Delivery System does Kerio Connect server use?
Block messages if client's IP address has no reverse DNS entry (PTR)
Internal Server IP in mail headers
See MoreAntivirus not working after updating to Kerio Connect 9.3.1 p2
Why is the Kerio Mail server Antivirus database not updating?
Antivirus seems to check each file multiple times
Antivirus update is failing with multiple errors
Antivirus Update Fails with Error: Version info doesn't contain required location
Sophos Antivirus database is outdated
See More