spamassassin.apache.org/updates
.sa-update
sa-update.
sa-update.dnswl.org
www.sa-update.pccc.com
sa-update.secnap.net
sa-update.space-pro.be
sa-update.ena.com
sa-update.razx.cloud
sa-update.fossies.org
sa-update.verein-clean.net
sa-update.bitwell.fi
sa-update.spamassassin.org