Vidensdatabase

By default, when a new e-mail account is created, the account server details are:

POP: mail.domain.com
SMTP: mail.domain.com
IMAP: mail.domain.com

e-mail User : user+domain.com

NOTES:
"domain.com" refers to the customer´s domain and user to the e-mail account username.
The SMTP server requires auth, then you need to check this box in your prefered e-mail client.
By the way, in your hosting control panel cPanel, you have tools to auto-configure your e-mail client at the easyest way.

And remenber, you can check your mail over the world, any time via webmail:
http://www.webmailenlinea.com