Good day!
We have received a bounce back email message:
571 Email from xx.xxx.xxx.x is currently blocked by Verizon Online's anti-spam system. The email sender or Email Service Provider may visit http://www.verizon.net/whitelist and request removal of the block. 131014
We filled form www.verizon.net/whitelist and write emails whitelist@ and abuse@
Following reply came back:
Your IP has been blocked because of spam issues or because your ISP indicates that it is dynamically assigned
We do not send spam.
We are ESP and execute all of the Best practices for bulk email senders.
Our sending IP is not in any black lists.
Our mail server is not open relay.
Please help to solve our problem.
In advance big thanks for help!