I'm listed on the RBL and haven't heard back in over a month
I have multiple customers that I cannot send email to because my IP address is listed on the RBL.
I have forwarded the specified email to email@example.com, verified I'm not listed on any other RBL's from MXToolBox, and reviewed my configuration for these messages in particular with no luck. I haven't heard back from any of the messages I sent and I'm not sure why.
Can you help me out?
flpdXXX.prodigy.net gave this error:
flpdXXX DNSBL:ATTRBL 521< 67.137.206.XXX >_is_blocked.For assistance forward this email to firstname.lastname@example.org