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New Member

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3 Messages

Wednesday, April 5th, 2023 10:08 PM

Unblock SendGrid IP Address Request

Hello,

I own a small business in Western NY and we use a dedicated IP address with SendGrid to send our automated emails to clients.  AT&T is blocking all the emails sent from our IP and we are receiving the following message:

"553 5.3.0 flph828 DNSBL:RBL 521< 50.31.47.21 >_is_blocked. For assistance forward this error to abuse_rbl@abuse-att.net"

We do not send spam, we have Unsubscribe options on our website as well as in our emails, and this is severely damaging our business.  I have tried emailing abuse_rbl@abuse-att.net 3 times over the last 10 months and have not received a response.

If someone can help with this, please unblock our IP address:  50.31.47.21

Thank you in advance.

Administrator

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26.2K Messages

11 months ago

Have you sent that error to the RBL team?  It can take up to 7 days to get a response.

 

Chris
AT&T Business Social Media

New Member

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3 Messages

11 months ago

Hello Chris,

Yes, I have.  I have sent them an email 3 times over the last 10 months and have not received a reply.  I receive the auto-reply email confirming my message has been received, but I have not received a follow up after that.

Can you bring this to someone's attention that can help us?  We have many AT&T email users as clients that cannot use our service because of this IP block.

Administrator

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26.2K Messages

11 months ago

I was advised this was already unblocked on 4/4.  If you are getting an error, please send a current non-delivery report so we can further investigate.

 

Chris
AT&T Business Social Media

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