RelayCountry - add message metadata indicating the country code of each relay
loadplugin Mail::SpamAssassin::Plugin::RelayCountry
The RelayCountry plugin attempts to determine the domain country codes of each relay used in the delivery path of messages and add that information to the message metadata.
Following metadata headers and tags are added:
X-Relay-Countries _RELAYCOUNTRY_ All untrusted relays. Contains all relays starting from the trusted_networks border. This method has been used by default since early SA versions. X-Relay-Countries-External _RELAYCOUNTRYEXT_ All external relays. Contains all relays starting from the internal_networks border. Could be useful in some cases when trusted/msa_networks extend beyond the internal border and those need to be checked too. X-Relay-Countries-All _RELAYCOUNTRYALL_ All possible relays (internal + external). X-Relay-Countries-Auth _RELAYCOUNTRYAUTH_ Auth will contain all relays starting from the first relay that used authentication. For example, this could be used to check for hacked local users coming in from unexpected countries. If there are no authenticated relays, this will be empty.
This plugin uses Mail::SpamAssassin::GeoDB and requires a module supported by it, for example MaxMind::DB::Reader (GeoIP2).
To install Mail::SpamAssassin, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Mail::SpamAssassin
CPAN shell
perl -MCPAN -e shell install Mail::SpamAssassin
For more information on module installation, please visit the detailed CPAN module installation guide.