DNS-based White/Black/Grey-list

Czech title

White/Black/Grey-list založený na DNS

Type

software

License

no - free

Authors

Vašíček Zdeněk, doc. Ing., Ph.D. (DCSY FIT BUT)
Vavruša Marek, Bc. (FIT BUT)

Keywords

DNS, Postfix, Sendmail, Milter, Greylist, Whitelist, Blacklist

Description

pyGreylist is a milter plugin written in Python that implements the greylist filtering method proposed by Evan Harris. It works by assuming that, spam engines will not retry sending their junk mail on a temporary error. The idea is to reject mail on a first attempt and then accept it after some time has elapsed. According to the SMTP specification, properly configured mail server should attempt to retry a delivery if it receives an temporary failure code.

Location

http://www.fit.vutbr.cz/~vasicek/nic-vip/greylist/

Licence

Free software under the terms of BSD license (see http://www.opensource.org/licenses/bsd-license.php)

Projects

Security-Oriented Research in Information Technology (MSM0021630528)

Research groups

Security-aware research in information technology (DC1-7-VZ)

Departments

Department of Computer Systems FIT BUT (DCSY FIT BUT)
Faculty of Information Technology BUT (FIT BUT)