private email server

private email server

Internet Forum

Activity: 6 Replies | 4 Subscribers

This question is still unresolved
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I have used and port 25 to reach my private email server from Thunderbird for almost 7 years. Today, after several hours on the phone with Cox I still cannot send any email. Does anyone know if there is a new port we can use? Not 25/465/587 as they all return a 5.1.1 error.

All Replies
  • Posted by JonathanJ
    25 Jan 2018 10:02 PM

    All available resources are engaged to get the issue resolved as quickly as possible.

    Jonathan J
    Cox Support Forums Moderator

  • Posted by cwaters
    27 Jan 2018 4:06 PM

    I spent more than an hour on hold for tech support to resolve this 5.1.1 error message generated while trying to send out email, and all I finally was told is they are working on it. Now 30 hours later, it's still not working. Interesting that e-mail to a account goes through, but all other non-Cox email recipients generate the message ("The server responded 5.1.1 <name> relaying not allowed. Please check the recipient and try again". Lousy service!! Until you can resolve this, 1) broadcast an e-mail message about the problem and the status of it's resolution, and 2) resume allowing SMTP port 25 and no password/authentication, and no SSL security, so your customers can at least send unsecured e-mails if they choose.

    This is not too much to ask for the cost of our pricey Cox internet service!


  • Posted by Anthonyd
    27 Jan 2018 6:50 PM

    Cox is trying to fix something, but doing it badly. I fight with mine get it running and then it stops Again. The relay is the latest issue.

    It might be time to look at Office365 Home.   It’s $100 per year and covers up to five people. 

  • Posted by Allan
    29 Jan 2018 1:29 AM


    If you are receiving relay error messages, please check the smtp server name and settings. This should remedy the problem.


    Allan - Cox Support Forums Moderator.

  • Posted by rareposter
    13 Feb 2018 7:42 PM

    doesnt work. any idea when you'll get it fixed. 

  • Posted by DannyS
    14 Feb 2018 1:11 AM
    Hello rareposter, Thanks for contacting us and with the new email client we have. People were required to make changes in their Outlook settings and were required to login to our site and change your password at for all changes to take affect. Please visit and verify your setting, even re-entering the information if the current information appears correct. Once all changes and password has been changed, please wait 30 minutes as the server has to process any changes prior to anything being able to process. Also verify no messages are in your outbox on all devices and if found, please move them to another folder prior to making these changes as well. Dan S. Cox Communications Social Media Support Specialist

    Danny S.

    Cox Support Forums Moderator