Win 10 and eM client 7 - when I send email to a hotmail account using eM client it bounces back however when I use my iphone on wlan or the t-online client the email gets delivered. So, it is not the IP address. Have tried changing the DNS and that fixed the problem briefly but the next day it is back to bouncing. Any ideas?
Forgot to mention the error code is 550 SC-002 - Namespace Mining. And, it only shows up when sending to hotmail using eM Client. With other email clients on the same IP address there is no problem.