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Blocked DNS - Email


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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Accepted by Administrator (Administrator)
Accepted by davidbk
‎02-05-2019 11:19 AM

Re: Blocked DNS - Email

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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