2010-10-05 20:53:21 
阿炯
OpenDKIM 是一个开源的DKIM发送者认证系统的C语言实现并在BSD协议下授权。DKIM(DomainKeys Identified Mail)是一种电子邮件的验证技术，使用密码学的基础提供了签名与验证的功能。
DKIM是由DomainKeys所改进的协定，大多数的运作方式与DomainKeys相同。在2007年2月时，DKIM被列入互联网工程工作小组(IETF)的标准提案(Proposed Standard)，并于同年5月成为正式标准(Standards Track)。
The statistics features were overhauled. Several minor bugs were... fixed. Generic DNS function registration was added. Enhancements were made to miltertest and various tools
The OpenDKIM Project is a community effort to develop and maintain an open source library for producing DKIM-aware applications, and a "milter"-based filter for providing DKIM service.
The DKIM sender authentication system was originally created by the E-mail Signing Technology Group (ESTG) and is now a proposed standard of the IETF (RFC4871). DKIM is an amalgamation of the DomainKeys (DK) proposal by Yahoo!, Inc. and the Internet Identified Mail (IIM) proposal by Cisco.
"milter" is a portmanteau of "mail filter" and refers to a protocol and API for communicating mail traffic information between MTAs and mail filtering plug-in applications. It was originally invented at Sendmail, Inc. but has also been adapted to other MTAs.
The OpenDKIM project started as a code fork of version 2.8.3 of the open source "dkim-milter" package developed and maintained by Sendmail, Inc. The license used by The OpenDKIM project is found in the LICENSE file. Portions of this project are also covered by the Sendmail Open Source License, available in this distribution in the file "LICENSE.Sendmail". See the copyright notice(s) in each source file to determine whether or not it is covered by both licenses.
This package consists of a library that implements the DKIM service and a milter-based filter application that can plug in to any milter-aware MTA to provide that service to sufficiently recent sendmail, Postfix or other MTAs that support the milter protocol.An optional asynchronous resolver library is also provided to work around limitations of the basic BIND resolver which comes installed on most systems.
最新版本：2.8
增加了 SMTP 报告传输，完整的基于 RRD 的声誉开发，改进对 postfix 配置文件的集成，修复了不少 bug，建议升级。
官方主页：http://www.opendkim.org/