Below are the settings that are needed to configure and retrieve email from your main pop account:
Mail Server Type: POP
POP Server: mail.yourdomain.com
POP Username: (your full email address)
POP Password: (the password that you selected when your account was setup)
POP Port 110
Here are the settings that you’ll need to send email:

SMTP Server: mail.yourdomain.com
SMTP Username: (your full email address)
SMTP Password: (the password that you selected when your account was setup)
SMTP Authentication: Enabled (Use same login as the incoming mail)
SMTP Port 26