this is the error I am getting
this is clear by that error message, do you have right email address? And if so then is it blocked on your server?
yes it is the correct email address …how do I check to see if it is blocked by the server?
By sending another message from another email account, unfortunately this is quite hard to resolve if you will really be blocked by server.
anyway you you send me your SMTP logs, go to tools - settings - advanced, check SMTP under your account, apply and restart eM Client.
Simulate steps that leads to your issue and after that send logs… to email@example.com together with this topic’s URL in subject.
then you can turn logging off.