It seems that you are skipping to set the configuration settings of your accounts. Please set all configuration settings in your accounts. Configuration Settings of pacbell.net , gmail and snet.net as shown below.
1. pacbell.net
- Server: outbound.att.net.
- Port: 993 or 143.
- Security: SSL/TLS.
- Username: Your full email address.
- Password: Your password.
2. gmail.com
- Incoming Server Hostname: imap.gmail.com.
- Port: 993.
- SSL: SSL/TLS.
- Authentication: Normal Password.
- Outgoing Server Hostname: smtp.gmail.com.
- Port: 465.
- SSL: SSL/TLS.
- Authentication: Normal Password.
3. snet.net
- Server Name = mail.bellsouth.net, or use the one in your email address (AT&T has many different domains)
- Port = 25 or 100 (This was supplied by my ISP/Mail)
- User Name and Password = Unchecked.
- Connection Security = None.