SMTP服务器-qpsmtpd
2013-06-14 16:39:13 
阿炯
qpsmtpd 是一个插件式的SMTP守护进程，采用Perl语言编写并在MIT协议下授权使用。qpsmtpd is a flexible smtpd daemon written in Perl. Apart from the core SMTP features, all functionality is implemented in small "extension plugins" using the easy to use object oriented plugin API.
qpsmtpd was originally written as a drop-in qmail-smtpd replacement, but now it also includes smtp forward, postfix, exim and maildir "backends".
Features
Plugins
Advanced but simple to use plugin system to easily install extra functionality and write local rules.
Almost all features are implemented in plugins
For example: tls (implements STARTTLS), spamassassin, plugins for most major anti-virus programs, various AUTH plugins (ldap, vpopmail, ...), OS detection, queue plugins (qmail, exim, postfix, Maildir), greylisting, SPF, etc etc.
Plugin directories: current development repository, Peter J. Holzer, Gavin Carr.
MTA compatibility
Drop-in replacement for qmail-smtpd
Postfix protocol module
EXIM-BSMTP
SMTP queuing plugin to support any SMTP compliant backend
Other "backends" are easily implemented with a queue plugin
Anti-Spam
Innovative spam fighting ideas can easily be implemented and tested with qpsmtpd plugins. One successful examples is the check_earlytalker plugin (disconnects most viruses and many spam engines before we even say hello!).
Support for DNS Black Lists like the Spamhaus lists.
Support for Domain-Based Blacklist Zones lists.
Support for Milter filters (yes, those written for sendmail) with the milter plugin
Greylisting with Gavin Carr's denysoft_greylist plugin
DomainKeys support with the domainkeys plugin
Integrated support for SpamAssassin
Virus scanning with ClamAV
Many others ...
最新版本：0.8
项目主页：http://smtpd.develooper.com/