Have recently downloaded upgrade Yosemite. but cannot connect to btinternet .com to send and receive e-mails. can you please help
Incoming Mail (POP3) Server - mail.btinternet.com Port - 110
Outgoing Mail (SMTP) Server - mail.btinternet.com Port - 25
Account Name/Login Name - Your email address (including the "@btinternet.com" or "@btopenworld.com" part)
Password - Your BT password
Please let me know if that didn't work, so we can continue troubleshooting.