EMAIL, SPAM PREVENTION & DELIVERABILITY • SINCE 2001
BY AL IVERSON
GMAIL LIST UNSUB
XNND DNS TOOLS
Do you use SpamAssassin?
If you're a
user, I recommend you swing over to my
DNSBL Resource site and read about the dead bl.open-whois.org blacklist
-- it's used by default in up-to-date SpamAssassin installs, and it's probably slowing down final delivery of your inbound email messages due to DNS timeouts.
Tuesday, August 18, 2009