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djplagzilla's avatar
djplagzilla
New Contributor II
4 years ago

Cxdns error when sending mail from my Outlook 365 account.

Cxdns error when sending mail from my Outlook 365 account. Is Cox blocking use of Outlook? Appears that Cox use of Cloudmark is filtering/blocking my outbound messages. I’m not sending bulk emails! O...
DavidA2's avatar
DavidA2
Former Moderator
Hi Djplagzilla,

I am sorry to hear that you are having trouble sending emails. I am not aware of any known issues with email right now. Are you able to provide the exact error that you are seeing?

David
Cox Social Media Specialist
djplagzilla's avatar
djplagzilla
New Contributor II
4 years ago

The error is

Task 'dsplagge@cox.net - Sending' reported error (0x800CCC6F) : 'Your outgoing (SMTP)email server has reported an internal error. If you continue to receive this message, contact your server administrator on Internet service provider (ISP). The server responded: 554 cxr-obgw-5003a.stratuscloudmark.com cmsmtp 69.169.10.121 blocked. Refer to Error Codes section at https:/cox.com/residential/support/email-error-codes.html for more information. AUP#CXDNS'

  • JonathanJ's avatar
    JonathanJ
    Former Moderator
    4 years ago
    @Djplagzilla

    Are you having any issues sending from cox webmail? This link will also provide the outgoing setting for outlook 365 https://bit.ly/3mO4Y4B.

    Jonathan J
    Cox Moderator
    • djplagzilla's avatar
      djplagzilla
      New Contributor II
      4 years ago

      no issues when sending from cox webmail account. I've verified that I have the settings and ports correct per instructions from Cox.