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New Contributor III
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Blocked e-mails from groups.io
Hello,
In the last couple of months, I've been notified by groups.io that a number of messages sent to me by several groups.io groups I subscribe to have bounced. Below is the report I received yesterday from groups.io. This seems to be a Cox problem, perhaps based on black listing by cxr.mx.a.cloudfilter.net. Note, that not all traffic from groups.io to me are blocked. This happens occasionally, but is a serious problem because I am never informed of the blocked traffic until I get a bounce report from groups.io, after they have prevented any future attempts to send me traffic that I signed up for. I have to explicitly inform groups.io to resume attempts to send me traffic.
Below are a few of the recent bounces according to groups.io:
| When | Message | Reason |
| Dec 21 | #21497 [CMRI-Users] Updating the MRCS firmware sketch that makes a BBLeo into a CMRI Node... | cxr.mx.a.cloudfilter.net: 550 5.1.0 66.175.222.12 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html for more information. AUP#CDRBL |
| Dec 16 | #21496 [CMRI-Users] FS: CMR/I Equipment! | cxr.mx.a.cloudfilter.net: 550 5.1.0 <bounce+12408+21496+987528+4746607@groups.io> sender rejected. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html for more information. AUP#CDRBL |
| Dec 15 | #21489 [CMRI-Users] DCCOD | cxr.mx.a.cloudfilter.net: 550 5.1.0 <bounce+12408+21489+987528+4746607@groups.io> sender rejected. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html for more information. AUP#CDRBL |
JonathanJ
Former Moderator
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Have you already follow these steps?
Contacting Cox for Assistance
If you are having problems with email delivery to Cox, and you were unable to resolve your problem using the steps in the Error Codes section above, send us an email at unblock.request@cox.net for assistance. Your email must contain all of the following information in order for us to process your request.
First name
Last name
Email address
Phone number
Domain
IP/CIDR range of outgoing email servers
From the following choices, indicate the item that best describes the issue you are experiencing.
My IP address is being blocked
My domain is being blocked
My email is being marked as spam
My email is not arriving to the intended recipients
My email is being delayed
Other
Include a detailed description of the issue you are experiencing, such as the date and time when the problem began and the corrective action that has been taken.
Include email server logs related to the issues.
Note: Due to the technical nature of the requested information, this email should be submitted by an email administrator or other technical contacts that is familiar, and can obtain, all of the requested details.
Jonathan J
Cox Moderator
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