Yahoo! Mailservers Blocklisted in SpamCop Blocklist Help Posted January 8, 2005 You say "entire Yahoo Domain" is blocked. The entire discussion has pointed out the use of IP addresses involved. There's the FAQ pointer once again, this time perhaps hit the "Glossary" link .. there is a (very simplified) walk through of what an IP address is ... 22387[/snapback] I said the entire yahoogroups.com domain, 18.104.22.168 and 22.214.171.124. Problem is, Yahoomail.com, which is where the majority of the spam originates from resolves to 126.96.36.199. As of 2 days ago , these addresses are no longer showing up as being blacklisted. But, I have created a number of filters to allow the groups I belong to, to pass through the 'blacklisted' label.