Mail::SpamAssassin::Plugin::Esp
SpamAssassin plugin for Invaluement.com Service Provider DNSBLs ("SPBL"), Sendinblue and MailUp esp.
The plugin doesn't download the data feed, the txt file should be downloaded using "curl -z" or "wget -N" that only downloads the file when the server versions are newer.
Sample rule to enable the plugin:
loadplugin Mail::SpamAssassin::Plugin::Esp Esp.pm
ifplugin Mail::SpamAssassin::Plugin::Esp
sendgrid_feed /etc/mail/spamassassin/sendgrid-id-dnsbl.txt
sendgrid_domains_feed /etc/mail/spamassassin/sendgrid-envelopefromdomain-dnsbl.txt
header SPBL_SENDGRID eval:esp_sendgrid_check()
describe SPBL_SENDGRID Message from Sendgrid abused account
endif