Unblock SendGrid IP Address Request
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< 22.214.171.124 >_is_blocked. For assistance forward this error to email@example.com"
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 firstname.lastname@example.org 3 times over the last 10 months and have not received a response.
If someone can help with this, please unblock our IP address: 126.96.36.199
Thank you in advance.