IP Blocking Message
I have now more than 3 months waiting for an answer, I wrote several times to email@example.com but they never answer. I dont send SPAM, but the IP of the server is block. I have try to fill the forms http://rbl.att.net/block_inquiry.html and http://rbl.att.net/end_user_request2.html but they are not longer available. Please , I need help seriously.
All my emails are been block and I am getting this error.
For security reason I will erase the ip and the emails.
De: Mail Delivery System [mailto:Mailer-Daemon@myservername.com]
Enviado el: Monday, May 22, 2017 2:52 PM
Asunto: Mail delivery failed: returning message to sender
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:
host ff-ip4-mx-vip1.prodigy.net [220.127.116.11]
SMTP error from remote mail server after MAIL
553 5.3.0 flph397 DNSBL:ATTRBL 521< MY IP >_is_blocked.For assistance forward this email to firstname.lastname@example.org
Waiting for your help.