hey everyone this is my first time posting but I’m really Struggling with yahoo delivery
for the last 4 months I received this error message frequently when sending email campaigns
Error: “553 5.7.2 [TSS09] All messages from 188.8.131.52 will be permanently deferred; Retrying will NOT succeed. See https://postmaster.yahooinc.com/error-codes” while connected from jesepe.uneafuseauean.xyz (184.108.40.206) to mta5.am0.yahoodns.net (220.127.116.11)
I tried every method / solution and best practices and nothing works !!
so if anyone have the same problem or have the solution ill be appreciate