In order to set up Outlook Express POP3 client to connect to the WorkgroupMail administrator, do the following:
In the General page of the Outlook Express Mail Server Properties sheet enter your e-mail address into the E-mail address field.
In the Servers page, enter into the Outgoing mail (SMTP) and Incoming mail (POP3) fields, the IP address of the WorkgroupMail gateway computer.
Enter the Local POP3 username and password into the Account name and Password fields, respectively.
In the Connection page, ensure that the Connect using my local area network (LAN) radio button is selected.
Outlook Express is now read to send and receive Internet mail using the WorkgroupMail server.