Qpsmtpd

Infobox_Software
name = qpsmtpd



caption =
developer = Ask Bjørn Hansen
latest_release_version = 0.40
latest_release_date = June 112007
operating_system = Unix
genre = open source, Mail transfer agent
license = MIT license
website = http://smtpd.develooper.com/

qpsmtpd is an SMTP daemon written in Perl. It was originally designed to be a drop-in replacement for "qmail-smtpd", the SMTP component of qmail, and it is now also compatible with Postfix, Exim, sendmail and virtually any software that "speaks SMTP". With its flexible plugin system it's easy to make it interoperate with other pieces in a mail system.

Its main purpose is to allow mail administrators to perform more advanced spam filtering than is possible with other SMTP daemons. As one example of dozens, the [http://svn.perl.org/qpsmtpd/trunk/plugins/check_earlytalker check_earlytalker module] blocks many viruses and mass mailers based on their characteristic violation of basic protocol, even before they start sending actual mail data.

The program's main author is Ask Bjørn Hansen. It is licensed under the MIT License.

See also

*Anti-Spam SMTP Proxy (a similar project)

External links

* [http://smtpd.develooper.com/ qpsmtpd - Develooper LLC]
* [http://wiki.qpsmtpd.org/ qpsmtpd wiki]
* [http://www.oreillynet.com/pub/a/sysadmin/2005/09/15/qpsmtpd.html Using qpsmtpd]
* [http://searchenterpriselinux.techtarget.com/tip/0,289483,sid39_gci1235770,00.html TechTarget article on qpsmtpd]
* [http://www.taint.org/2007/04/17/132339a.html Using qpsmtpd for traps.spamassassin.org]
* [http://freshmeat.net/projects/qpsmtpd/ Qpsmtpd on Freshmeat]