Copyrights and Trademarks

Copyright © 2000-2012 Sophos Limited. All rights reserved. Sophos, PureMessage and PerlMx are registered trademarks of Sophos Limited and Sophos Group. All other product and company names mentioned are trademarks or registered trademarks of their respective owners.

No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise unless you are either a valid licensee where the documentation can be reproduced in accordance with the license terms or you otherwise have the prior permission in writing of the copyright owner.

Portions of the SpamAssassin plug-in are derived from SpamAssassin, and are used here under Perl's Artistic License. See for more information on SpamAssassin. SpamAssassin is copyright (c) Justin Mason <>.

Open Source is a trademark of Software in the Public Interest

All other products mentioned are trademarks or registered trademarks of their respective companies.

PCRE License

PCRE is a library of functions to support regular expressions whose syntax and semantics are as close as possible to those of the Perl 5 language.

Written by: Philip Hazel <>

University of Cambridge Computing Service, Cambridge, England. Phone: +44 1223 334714.

Copyright © 1997-2003 University of Cambridge

Permission is granted to anyone to use this software for any purpose on any computer system, and to redistribute it freely, subject to the following restrictions:

  1. This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  2. The origin of this software must not be misrepresented, either by explicit claim or by omission. In practice, this means that if you use PCRE in software that you distribute to others, commercially or otherwise, you must put a sentence like this
    Regular expression support is provided by the PCRE library package,
    which is open source software, written by Philip Hazel, and
    copyright by the University of Cambridge, England.

    somewhere reasonably visible in your documentation and in any relevant files or online help data or similar. A reference to the ftp site for the source, that is, to

    should also be given in the documentation. However, this condition is not intended to apply to whole chains of software. If package A includes PCRE, it must acknowledge it, but if package B is software that includes package A, the condition is not imposed on package B (unless it uses PCRE independently).

  3. Altered versions must be plainly marked as such, and must not be misrepresented as being the original software.
  4. If PCRE is embedded in any software that is released under the GNU General Purpose Licence (GPL), or Lesser General Purpose Licence (LGPL), then the terms of that licence shall supersede any condition above with which it is incompatible.
The PCRE library distributed with the Sophos Anti-Spam SDK has been modified.