Domain Names/Static IP
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New Contributor

get.comcastbusiness.com fails DNSSEC validation

Hi,

 

I've been wondering why my mail server keeps rejecting email from @get.comcastbusiness.com. The domain lookup fails. I dug deeper and saw there were DNSSEC validation errors in the log files... the DNSSEC validation chain fails. A simple domain lookup even even fails with Comcast's DNS servers.

dig get.comcastbusiness.com @75.75.75.75

 

But it succeeds with any non-DNSSEC validating resolver, like Google Public DNS and OpenDNS.

dig get.comcastbusiness.com @8.8.4.4

dig get.comcastbusiness.com @208.67.222.222

 

To see the full details of why it fails, see:

http://dnsviz.net/d/get.comcastbusiness.com/dnssec/

 

Please fix the DNSSEC validation for get.comcastbusiness.com.

 

Thanks,

--Steve

 

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Community Manager
Community Manager

Re: get.comcastbusiness.com fails DNSSEC validation

Welcome Bitblaster.  Thank you for highlighting this issue.  Our DNS Support team reports this as resolved.  Please let us know if you need further assistance.

 

Thank You

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New Contributor

Re: get.comcastbusiness.com fails DNSSEC validation

By the way, if someone sees a similar DNS/DNSSEC problem in the future, post the issue through the Comcast DNS contact page. They had this fixed pretty quickly. http://dns.comcast.net/index.php/contactus

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Community Manager
Community Manager

Re: get.comcastbusiness.com fails DNSSEC validation

Welcome Bitblaster.  Thank you for highlighting this issue.  Our DNS Support team reports this as resolved.  Please let us know if you need further assistance.

 

Thank You

View solution in original post

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Highlighted
New Contributor

Re: get.comcastbusiness.com fails DNSSEC validation

By the way, if someone sees a similar DNS/DNSSEC problem in the future, post the issue through the Comcast DNS contact page. They had this fixed pretty quickly. http://dns.comcast.net/index.php/contactus

View solution in original post

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Community Manager
Community Manager

Re: get.comcastbusiness.com fails DNSSEC validation

Hello bitblaster,

 

Thank you for sharing this information with the community.

We appreciate it and look forward to your future contribution to engage your fellow community members.

 

 

Thank you

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