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Mon, Jan 28, 2019 3:01 PM

Blocked DNS - Email

5.3.0 flpd591 DNSBL:rbl 521

 

The above is the error we receive at a clients location.

 

Any clear insight would be great to get this resolved.

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ATTHelp

Community Support

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133.7K Messages

2 years ago

Hello @timthuston,

 

Thanks for reaching out on the forums, we're here to help! To get started can you confirm if this is a residential account or a business account? Additionally, have you already sent an email to abuse_rbl@abuse-att.com, if not you can check out our Postmaster site for more information. We look forward to hearing back from you!

 

James C., AT&T Community Specialist

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