If you read your mail using Microsoft
Outlook, and are having problems, the first step is to check your settings.
To do this, open Outlook, and on the top navigation bar, click Tools
and then Services (or in some versions of Outlook Accounts)
When you click Services you will see this screen;

Click Add and you will see this screen;
Select Internet E-mail and click the OK button.

Enter your details as shown above. Then click Servers to go to
this screen;
Here, enter the e-mail settings needed to download your e-mail. These
are;
Incoming mail (POP3) - mail.yourdomain.co.uk
Outgoing mail (SMTP) - If you are using our dial-up service then use
smtp.yourdomain.co.uk if not use your existing ISP for example
smtp.tiscali.co.uk (if you are using Tiscali)
Enter your account name and password. Remember that your
account name is your Username (supplied with your
account details) followed by a - symbol then all of the characters that
come before the @ symbol in your e-mail address.
Leave the checkbox Log on using Secure Password Authentication clear,
and then click the Connection tab
Here, make sure that Connect using my modem has a dot to the left of
it, and that the Modem - use the following dial up networking connection
is set to the correct dial-up
Then then click the Connection tab to see this screen;

Make the settings as shown above. Only select the 'Leave a copy of the
Messages on the server' option if you intend to use webmail;
Click OK on the Mail Account Properties.
Then click OK on the Services screen.