SYNOPSIS

[-h host ]

DESCRIPTION

is a filter for smtpd(8) which can be used to check new connections against a DNS-based Blackhole List (DNSBL).

The options are as follows:

-h host

Set the DNSBL host to be queried.

The default host is dnsbl.sorbs.net.

The remote IP address of new connections is used in a DNS query against the DNSBL. If the remote address is listed, the connection is rejected, otherwise accepted.

HISTORY

The first version of was written in 2013.

AUTHORS

An Eric Faurot Aq Mt [email protected]