This release of the Clearswift SECURE Email Gateway provides a fully functional Adaptive Data Loss Prevention (A-DLP) solution, operating on the 64 bit platform of Red Hat Enterprise Linux 6.6. The Email Gateway helps to prevent critical information data loss while protecting the intellectual property and brand of your organization.
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We strongly recommend that you follow the installation steps outlined in the Clearswift SECURE Email Gateway Installation & Getting Started Guide. These instructions enable you to install the Gateway correctly and safely. |
If you are migrating from a previous version of the SECURE Email Gateway, you must back up your system and latest configurations before installing. Detailed instructions on backup and restore are available in the Installation & Getting Started Guide.
Download the Clearswift SECURE Email Gateway 4.1 Installation & Getting Started Guide
You can install the
Full installation instructions are provided in the Clearswift Gateway Installation & Getting Started Guide.
Perform the following steps to download and apply software updates when you upgrade from
Open an SSH session and access the Clearswift Server Console. Log in using your cs-admin access credentials.
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Online or Offline mode? Offline mode is designed for installations that operate in a closed environment, disconnected from the Internet. Unless this is a specific requirement for your system, you should install To perform an offline upgrade you require a copy of the latest release ISO mounted to suitable media (DVD/USB). Please contact Clearswift Technical Support if you need additional guidance on how to complete this step. |
If you have online repositories enabled, updates will be downloaded overnight (automatically). You can apply them immediately. You can also use the Check for New Updates button if you believe that there has been a recent security fix issued.
To apply software updates:
Select Yes to confirm that you want to apply the updates.
All downloaded updates will now be installed. This process can take several minutes. A rolling progress log will be displayed.
At the end of the upgrade process, the system will prompt you to either reboot or log out. Follow the instructions on-screen.
There are a number of new features included in this release:
For more detail on these new features and how you can use them, see What's New in 4.1.0 in the online help.
This update fixes the following issues:
TLS Handshake fails when TLS Opportunistic is enabled: The TLS handshake failed with certain endpoints when Opportunistic TLS was enabled on the Gateway. This resulted in the Gateway not delivering a number of outgoing emails. This issue has been resolved.
Failed Sophos Anti-Virus updates result in message processing issues: The Gateway failed to process messages and held them in the Message Processing Failure Area with the error “Sophos Anti-Virus: Error 0xc21d0307, 127.0.0.1:4010, 3” when Sophos Anti-Virus updates failed. This issue has been resolved.
The following are known issues or limitations in this release:
Adaptive Redaction limitations: There are a number of specific limitations which should be noted:
Numbers of 16 digits or more in Microsoft Excel cannot be redacted.
Content in Microsoft Office documents with extensions of .doc, .xls, or .ppt can be detected but not redacted
Content rules and peered Gateways: It is possible to add and modify content rules which are licensed on any of the peers in the group. However, each Gateway peer applies the local licensed policy. This might result in redundant content rules on Gateway peers which are not licensed to apply them.
For example, in a peer group of Gateways, Peer A might be installed with a supplementary license feature for Redaction whereas Peer B is not. It is possible to add a Redact Text content rule to a policy route on Peer B, but redaction will not be applied to content processed by Peer B.
Displaying online help with Internet Explorer (IE8): Internet Explorer might stop working or you might encounter screen format issues when displaying help in IE8.
If this happens, you need to add the site to Compatibility View. From the Browser, click Tools > Compatibility View Settings, and add clearswift.com.
Note the following end of life information:
For more details, see the End of Life statement.
For contact details, information on product updates and other products, see the Clearswift Website.
Revision 1.0 March 2015
Published by Clearswift Ltd.
© 1995-2015 Clearswift Ltd
All rights reserved
The materials contained herein are the sole property of Clearswift Ltd. No part of this publication may be reproduced or disseminated or transmitted in any form or by any means electronic, mechanical, photocopying, recording, or otherwise stored in any retrievable system or otherwise used in any manner whatsoever, in part or in whole, without the express permission of Clearswift Ltd.
Information in this document may contain references to fictional persons, companies, products and events for illustrative purposes. Any similarities to real persons, companies, products and events are coincidental and Clearswift shall not be liable for any loss suffered as a result of such similarities.
The Clearswift Logo and Clearswift product names are trademarks of Clearswift Ltd.
All other trademarks are the property of their respective owners. Clearswift Ltd. (registered number 3367495) is registered in Britain with registered offices at 1310 Waterside, Arlington Business Park, Theale, Reading, Berkshire RG7 4SA, England. Users should ensure that they comply with all national legislation regarding the export, import, and use of cryptography.
Clearswift reserves the right to change any part of this document at any time.
Copyright © 1997-2015 Kaspersky Labs, 10 Geroyev Panfilovtsev St., 125365 - Moscow, Russian Federation. The Kaspersky Logo and Kaspersky product names are trademarks of Kaspersky Labs.
Copyright © 2000-2015 Sophos Limited. All rights reserved. Sophos is a registered trademark of Sophos Limited and Sophos Group. All other product and company names mentioned are trademarks or registered trademarks of their respective owners.
Licensed under US Patent No:5,623,600
Protected by UK Patent 2,366,706
The software allows Clearswift to collect certain data from you regarding spam and other unwanted emails. Clearswift will use this information to improve its service to you (defined as the "Support Service") in the license agreement. Clearswift will use all information provided in accordance with the license agreement and Clearswift's stated privacy policy which can be found at http://www.clearswift.com/about-us/legal-information.
