Recently switched over to A&T U-verse bundle. They had some kind of thing where they want everyone using POP3 inbound email server inbound.att.net (the outbound server is outbound.att.net).
Well, I wasn’t able to connect out to get my mail after the AT&T tech helped me fix the port numbers, etc., in Windows Live Mail. I finally figured out the issue: PeerBlock was blocking IP address 220.127.116.11.
I saw that PeerBlock had blocked this Yahoo! Inc. IP address, so I right-clicked on this and “Allow 18.104.22.168 permanently”.
I have no idea why any of the Peerlock lists would have a Yahoo! IP address.