flpd596 DNSBL:RBL 521_is_blocked
Currently our mail server is being blocked (flpd596 DNSBL:RBL 521<myIP >_is_blocked). I have emailed firstname.lastname@example.org but have not heard back from anyone since 1week ago. I emailed email@example.com again but this time from the administrator account we use and haven't heard anything back now since 3days. I have several customer using our email services who are unable to email anyone @att.net or @bellsouth.net any assistance would be greatly appreciated.