[appsuite-announce] Open-Xchange releases Dovecot Anti-Abuse Shield v1.4.0

Open-Xchange App Suite Maintenance Announcements appsuite-announce at open-xchange.com
Thu Oct 5 10:22:52 CEST 2017

Dear Customers and Partners of Open-Xchange,

Open-Xchange is pleased to announce the release of Dovecot Anti-Abuse Shield v1.4.0.

Dovecot Anti-Abuse Shield is included with Dovecot Pro and works with both Dovecot Pro and OX App Suite as a component to protect against login/authentication abuse.

Anti-Abuse Shield runs on a cluster of servers, and integrates with OX App Suite and Dovecot to detect abuse, brute force attacks and also to enforce common authentication/authorization policies across the platform.

Please note: Dovecot Anti-Abuse Shield is only available for customers who have a valid Dovecot Pro license and Dovecot Pro v2.2.27.1 onwards.

New Features include:

- The base DAAS package ships with a simple policy to handle brute-forcing protection. This is now supplemented with a separate package providing a comprehensive anti-abuse policy, with easy configuration, containing over 16 different policies including restrictions based on GeoIP, and user/IP whitelisting.
- Support for GeoIP based on City and ISP databases
- Support for reloading GeoIP databases without restarting DAAS
- Blacklisting based on CIDR ranges not just individual IP addresses

A Whitepaper can be found at:

Shipped Packages and Version:
- Dovecot Anti-Abuse Shield 1.4.0-rev1

You will find further information in the Release Notes:

For details of how to install and configure Dovecot Anti-Abuse Shield please refer to the instructions found at:

Best regards,
Your Open-Xchange Team

Open-Xchange AG, Rollnerstr. 14, 90408 Nuremberg, District Court Nuremberg HRB 24738
Managing Board: Rafael Laguna de la Vera, Carsten Dirks, Michael Knapstein 
Chairman of the Board: Richard Seibt

European Office: 
Open-Xchange GmbH, Martinstr. 41, D-57462 Olpe, Germany, District Court Siegen, HRB 8718 
Managing Directors: Frank Hoberg, Martin Kauss

US Office: 
Open-Xchange. Inc., 530 Lytton Avenue, Palo Alto, CA 94301, USA 

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