To setup your Email client such as Outlook, Thunderbird and so on you will need the mail settings as below:

For IMAP

Account type: IMAP

Incoming mail server: mail.domain.com (using your actual domain name)

Port 143

Username: Full email address

Password: mail account password

For POP3

Incoming mail server: as above

Port 110

User/pass: as above

SSL needs to be off

Outgoing mail server: as above

Port 25    (you can try port 25025 if you have issues sending)

User/pass: as above

SSL needs to be off

Please make sure you enable outbound authentication if using Outlook. This will use the same credentials as your incoming server.