Articles

Best-practices for securing Kerio Connect, SSL certificate queries

• Configuring SSL certificates in Kerio Connect

  Overview To secure Kerio Connect by SSL/TLS encrypted connection, you need an SSL certificate. SSL certificates authenticate identity on a server. Kerio Connect creates the first self-signed certifica...

• Securing Kerio Connect

  Overview In order to increase the security level of your Kerio Connect installation, it's required to configure certain security control settings. To prevent repeating dictionary attacks from the mult...

• Kerio Connect: Antivirus and Content Filters

  Overview This article provides information about the antivirus and content filters integrated into the Kerio Connect system.   Information Kerio Antivirus Kerio Connect includes Kerio Antivirus, integ...

• Secure email delivery via Sender Policy Framework and Greylisting

  Overview The users may receive similar Delivery Status Notification emails regarding SPF failures: Delivery to the following recipients failed permanently: * support@external_domain.com Reason: There ...

• Kerio Connect: Anti-Spam Advanced Filter

  Information The Kerio Anti-Spam extension uses the BitDefender online scanning service and provides an advanced level of spam filtering on incoming messages.  When Kerio Anti-Spam is enabled, the foll...

• Deploying Let's Encrypt SSL Certificate on Linux DEB Installations

  Overview This article provides information on how to successfully deploy Let’s Encrypt SSL certificate in Kerio Connect. Prerequisites Kerio Connect installed on any Debian-based distro (e.g., Ubuntu,...

• Setting HTTP Security Headers for Kerio Connect

  Overview Some authorities require domain compliance for HTTP headers. This article shares the process of setting configuration variables for HTTP Security Headers.    Prerequisite Access to the Kerio ...

• Legit Emails Are Blocked by Spam Repellent

  Overview You may notice that emails from certain senders are not being received. Also, you may find the following messages in the SMTP server Debug logs: {smtps} Client 192.237.159.XXX:64873 closed co...

• Resolving "Unable to open DLL library kavmodule.dll" Error

  Overview Kerio Connect is constantly showing the following entries in the Logs: [11/Oct/2019 09:34:47] AntivirusModule.cpp: Antivirus module: Unable to open DLL library D:\Kerio\MailServer/plugins/kav...

• Trusting Self-Signed SSL Certificates on Client Computers and Mobile Devices

  Overview When accessing Webmail via browsers using a self-signed SSL certificate in Kerio Connect, you may get an invalid SSL certificate warning. Your connection is not private.  This article provide...