Email settings for an Email Client (Outlook, Eudora, MAC mail etc.):
Incoming mail server: mail.yourdomain.com Outgoing mail server: mail.yourdomain.com Outgoing mail server does require authentication.
Incoming mail port: 110 for POP3, 143 for IMAP Outgoing mail port: 26
Username is the same one as you use for webmail (the full email address). (If entering "username@yourdomain.com" does not work, try "username+yourdomain.com)