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Restoring Cox Email Settings in Mail for Mac OS X El Capitan
Last Updated: Fri, 19 Aug 2016 > Related Articles
Summary
Follow these steps to update your server settings if you are having issues with sending and receiving your Cox email and are using Mac OS X El Capitan.
Solution
Note: Before troubleshooting email server settings, confirm all pending system updates have completed install.
Updating your email server settings can restore your ability to send and receive Cox email when using Mail for Mac OS X from Leopard 10.5 to El Capitan 10.11.
Use the following steps to edit the incoming and outgoing server settings in Mail for Mac OS X El Capitan.
- Go to the Applications folder and click Mail, or click the Mail icon from the Dock at the bottom of your screen.
- From the Mail drop-down menu, click Preferences.


Note: The Incoming Mail Server field is grayed out and cannot be edited.
Complete the following tasks.
- Click the Advanced tab.
- If checked, uncheck the box next to Automatically detect and maintain account settings.

- Click the red circle at the top left of the window.
- Click Save to save the changes.

- From the Mail drop-down menu, click Preferences.
- Click the Accounts tab.
- In the Incoming Mail Server, User Name, and Password fields, enter your information. See Cox Email Server Settings for more details.
- Click the red circle at the top left of the window.
- Click Save to save the changes.
Quit Mail and then test your changes by sending yourself a test email from a different email account.
- Go to the Applications folder and click Mail, or click the Mail icon from the Dock at the bottom of your screen.
- From the Mail drop-down menu, click Preferences.


Note: The Incoming Mail Server field is grayed out and cannot be edited.
In the Outgoing Mail Server (SMTP) field, review the name populated.
- Click the arrows icon next to the Outgoing Mail Server (SMTP) field.

- Click Edit SMTP Server List...

Complete the following tasks.
- Select the correct SMTP server displayed in the In Use By Account column.

- Click the Advanced tab.
- If checked, uncheck the box next to Automatically detect and maintain account settings.
Important: If Automatically detect and maintain account settings is checked when Apple Mail is exited and re-opened, the Authentication type for the outgoing server will change to MD5 Challenge-Response. This box must remain unchecked and the Authentication displays Password.

- Verify the correct server settings. See Cox Email Server Settings for more details.
- Click OK.
- Click Save to save the changes.
From the Accounts window, confirm the following.
- The box next to Use Only This Server is checked.
Note: If you use your Mac on a different network, such as an outside Wi-Fi hotspot, the mail server might not accept and send messages. Make sure that Use only this server is not selected so that Mail can use any available server.
- The selected Outgoing Mail Server is correct.
From the Inbox, complete the following tasks.
- Click Mailbox and then click Take all Accounts Offline.
- Re-click Mailbox and then click Take All Accounts Online.
Note: An incorrect password in SMTP generates errors that may mean the Cox email account password is incorrect.
Test your changes by sending yourself a test email.
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