Attention: Perform the below configuration on one of your email accounts first before applying the configurations to all of your computers.

1.  Open Outlook. Select Account Settings... from the Tools menu.

2.  On the E-mail tab, click New.

3.  Select "Manually configure server settings or additional server types" and click Next >.

4.  Select "Internet E-mail" and click Next >.

5.  Enter the following information for E-mail Accounts.

• Your Name: Enter the name you wish recipients to see when they receive your message.
  
• Email Address: This is the address that your contacts' email program will reply to your messages. This is also the address that will get recorded in your contacts' address book if they add you as a contact.

• Account Type: IMAP
  
• Incoming mail server: Enter imap.mailnexus.com
  
• Outgoing mail server (SMTP): Enter smtp.mailnexus.com
  
• User Name: Enter your fully qualified email address. ( This e-mail address is being protected from spam bots, you need JavaScript enabled to view it )
  
• Password: If you wish for Outlook to save your password, check the box labeled "Remember Password" and enter your password in the text field.
  
  Click the "More Settings..." button

NOTE: "yourdomain.com" is an example, if your domain name were "ABCcompany.com", you would enter "ABCcompany.com" into the field.

If you discover your ISP is blocking port 5125, chances are they are also blocking port 25. Either one should work, though it is more common that port 25 be blocked.  You will need to call your ISP and ask them to open port 5125 for you. Otherwise, you will have to change back to using your ISPs outbound email server.

6.  Click on the Outgoing Server tab, and check the box labeled "My outgoing server (SMTP) requires authentication." Then choose to "Use same settings as my incoming mail server."

7.  Click on the Advanced tab.

• The "Incoming Server (IMAP)," port number should be set to 143.
  
• The "Outgoing Server (SMTP)," port number should be set to 5125.

8.  Click OK in the Internet E-Mail Settings.

9.  Click Next. Click Finish.

Outlook is now configured to send and receive mail.