Why i am getting "Sending failed;Reason:554 5.1.8 Sender Address Blocked" error
Why i am getting "Sending failed;Reason:554 5.1.8 Sender Address Blocked" error
I gave proper configuration values but i am unable to send emails. Previously i am able to send emails from my application. Now I am getting bellow error
SERVER -> CLIENT: 554 5.1.8 Sender Address Blocked
SMTP ERROR: Password command failed: 554 5.1.8 Sender Address Blocked
SMTP Error: Could not authenticate.