- In Mozilla Thunderbird, from the Tools menu select Account Settings.
- Select Email account, and then click Next.
- Enter your name and e-mail address. (make sure it is entire email address)
- Select POP as the type of incoming server you are using. Your incoming server is mail.4cdg.com
- Enter your e-mail address for the Incoming User Name, and Outgoing User Name. Click Next
- Enter a name for your email account and click Next.
- Verify your account information and click Finish.
- In the Account Settings window, select Outgoing Server listed below your new account and make the server name mail.4cdg.com.
- Type mail.4cdg.com for the Server Name and port setting should be 25
- Select Use name and password and enter your e-mail address. Thunderbird will ask you for your password the first time you try to send mail. Click OK.