GREYSCANNER(1)

NAME
greyscanner - Grey trapping daemon for OpenBSD spamd

SYNOPSIS
greyscanner

DESCRIPTION
greyscanner complements OpenBSD spamd(8) greylisting by applying additional heuristics to greylisted hosts. Additional heuristics include: confirm senders email address is valid, confirm existence of the senders MX or A record in DNS, confirm recipient address(es) is valid, and more. Offending hosts are flagged as 'trapped' in the spamd database.

FILES
/etc/mail/greyscanner.conf optional config file

SEE ALSO
spamd(8), spamdb(8), <http://bitbucket.org/bonetruck/greyscanner>

HISTORY
Bob Beck created greyscanner in 2006. Jim Razmus II revised the program, added documentation, and packaged it for OpenBSD in 2009.