Determining if a newer build is available

As a default option, the splash screen and the Debug log in the Administration Console will display a warning if a new build is available. You can click on the "Check Now" button found here Configuration → Advanced Options → Update Checker to run a manual check for a new build.

You can also visit the download page on our website to find the latest build available.

Upgrading Kerio MailServer

If using Windows

1. Double-click on the installer.
2. Select your language (e.g. English).
3. Select "Modify" and click "Next"
4. Leave all of the components selected and click "Next"
5. The installation should be completed and you can click "Finish"

If using OS X

1. Double-click on the *.dmg file.
2. Double-click on the installer.
3. Read the license agreement and click "Continue"
4. Click "Agree" to continue the installation
5. Select "Easy Install" and then click "Install"
6. Click on "Quit" once the installation has been completed.

If using RedHat or SuSE

1. Type the command rpm -Uvh and then the name of the installer (i.e. kerio-mailserver-6.1.3build889-linux.i386.rpm )
2. Stop and restart the Kerio MailServer service using the command /etc/rc.d/init.d/keriomailserver restart

Please note

• Installing the upgrade will leave your current settings intact.
• You can backup of your current settings as a precaution. Instructions for creating a backup can be found in the Email backup section of our manual.
• Kerio MailServer service can be kept running while installing the upgrade.

Upgrading from older versions

When upgrade from older version is required, there are few milestone versions which needs to be installed prior to the most up to date version. Following list is a list of versions which needs to be installed before you will proceed to the most up to date version. Follow this list and install each version which is higher then actually used:

• Kerio MailServer 5.1
• Kerio MailServer 5.5
• Kerio MailServer 5.7.10
• Kerio MailServer 6.0 a
• Kerio MailServer 6.0.10
• Kerio MailServer 6.5.2
• Kerio MailServer 6.7.3 Patch 1
  
• Version for other platforms as Linux, MacOS X are available from our archive.

All these versions need to be installed in the above order to properly update all internal structures which were changed through the release periods. Before you proceed we recommend to backup Kerio MailServer store, Kerio MailServer configuration files according to our manual and check if the license is valid for latest Kerio MailServer version. The subscription expiration date can be found on the splash screen of your Kerio MailServer or Connect administration console.

Possible complications

• Upgrade to Kerio MailServer 6.x series from KMS 5.x series
  

  When being upgrading from Kerio MailServer 5.7.0 to Kerio MailServer 6.0.0. according to the upgrade process you may notice a problem with a version check. This problem happens occasionally and is caused by a missing version registry key in Windows. This problem can appear only on Windows platform and can be fixed using this registry key file (zip file).

• Upgrade to Kerio MailServer 6.1
  

  We haven't noticed any problem during this upgrade step. Important step in this actualization is to convert Kerio Outlook Connector user settings to a new database. This is time consuming action (it can take few hours according to the Kerio MailServer's store size) due to a lot of data which needs to be converted, hence it is recommended to perform this upgrade in a time when it will not affect users (Kerio MailServer can be slow during this time due to a heavy load).