I want to setup the Outlook express, so that, all the mails of the webmaster of my domain, I can receive and sent it through it, I want to know, which POP and SMTP servers, I need to enter.
You can view information about Incoming (POP3) Outgoing (Smtp) Servers by clicking on the e-mail icon from the Quick Acess of your control panel. In new form that will appear you will see Mail control, and Mail Service sections on the top. Under Mail control you can select your mail domain from dropdown menu (if you have more than one), and click on Go button to see properties for that other mail domain.
In this case, there is only one domain, for which POP3 and SMTP settings are shown at Mail Control section.
What is this SMTP Auth?
If your mail servers uses SMTP AUTH, you must configure your Outlook Express to send a login and password not only when you receive mail, but also when you send it.
What is this POP before SMTP?
In POP before SMTP, the relay system collects your IP address when you authenticate yourself with the POP server, and then permits SMTP relaying from that IP address for a short period of time. In other words, if your server uses POP before SMTP, you need to check your mail first, only then you can send your messages.