"Accounts Settings" can be found under "Tools"

Locate your email account from the list on the left of the "Account Settings" window. Underneath this account will be an option for "Server Settings", select this and update the "Server Name" field to mail.pageplay.com

Select "Outgoing Server (SMTP)" from the column on the left of the Account Settings window.

Click on your email account in the list that appears, then click the "Edit" button

In the window that appears (below), update the "Server Name" field to mail.pageplay.com

Click the OK button when you're done.

Click the "OK" button in the Account Settings window to close it and save your new settings.