Use mail.attbi.com for all three types of servers.
- Incoming Server: inbound.att.net/ imap.mail.att.net
- Port: 995/ 993
- Security: SSL
- Outgoing Server: outbound.att.net/smtp.mail.att.net
- Port: 465 / 587
- Security: SSL
- Username: Full email address
Your Att.net pop3 and SMTP Settings is setup successfully
