djplagzilla

New Contributor II

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5 Messages

Closed

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! Only sending a few a day! I talked to Cox and they said couldn’t help unless I signed up for their $10/month service option???!

DavidA2

Former Moderator

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212 Messages

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

New Contributor II

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5 Messages

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

Former Moderator

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1.9K Messages

@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

New Contributor II

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5 Messages

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

dmoranok

New Contributor

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7 Messages

I am also having this same exact issue as well.

djplagzilla

New Contributor II

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5 Messages

And I just got off a support chat with Microsoft for approx 1 hour and they tried everything. They suggested I get back with Cox.

MichaelJ

Moderator

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1.8K Messages

Hi Dmoranok,

Are you able to send/receive emails using Cox Web Mail after you are logged on to the Cox website: www.cox.com?
This link may prove helpful as it lists the error codes and suggests steps to take: www.cox.com/.../email-error-codes.html

If you were unable to resolve your problem using the steps in the Error Codes section, send us an email at unblock.request@cox.net for assistance. Please scroll doen to the bottom of the article for the requisite information needed in your email.

Thank you,

Mike J.
Cox Support Forums Moderator

CrystalS

Former Moderator

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440 Messages

Hi @Djplagzilla,

I am so very sorry to learn of your email troubles and I'd like to help.
This appears as if you may need someone to look into your account. We would definitely be able to assist you with this. Please reach us on Twitter at @CoxHelp, visit us on Facebook, or email us at cox.help@cox.com. Provide us the name on the account with the complete service address with a link to this thread so we can get started.

Crystal S.
Cox Support Forum Moderator

djplagzilla

New Contributor II

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5 Messages

I finally figured this out. I disabled/turned OFF the McAfee VPN option and now I am able to send emails!

Just guessing here but the VPN option must have been changing my IP address and Cox was thinking this was a blacklisted IP???

Not sure of the technical details but everything is working again!

CrystalS

Former Moderator

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440 Messages

Hello @Djplagzilla,

I'm so glad that you got your emails working. Is there anything else we can do for you? We are always available to assist you at any time. Please use the Cox app to manage your bill, reset equipment. We appreciate your business and being a loyal Cox customer. Please stay safe and healthy. Thank you for contacting the Social Media Support Group.

www.cox.com/.../cox-app.html

Check out the Cox App

Crystal S.
Cox Support Forum Moderator

Welcome to the Cox Community

Cxdns error when sending mail from my Outlook 365 account.

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JonathanJ

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MichaelJ

CrystalS

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