As a bulk email sender, we follow the best practices for Deliverability. In the recent past we have observed that Yahoo is blocking most of our IP addresses from sending with erorr code of 553.
for bulk email sender ,I want to know why Yahoo is blocking more of the IP addresses recently?
As a bulk email sender, we follow the best practices for Deliverability. In the recent past we have observed that Yahoo is blocking most of our IP addresses from sending with erorr code of 553.
You appear to be saying you have been blocked for sending or being associated with spam. I suggest
1. You send a message to everbody in your address list requesting that they sign up to a new address list.
2. You drop the old address list in favour of the new one.
3, You use a server not associated with spam.
What error are you getting? There was recently an RBL false+ issue with the Yahoo incoming mail servers:
Also, here are some suggestions for cleaning up your email list and increasing your email reputation: