Why: "Unable to send message;Reason:450 4.7.0 You are sending too many emails ...Slow down [sender] US"
Why: "Unable to send message;Reason:450 4.7.0 You are sending too many emails ...Slow down [sender] US"
Why i am getting this message every time i am trying to send e-mails trought my SMTP provider?
How to solve it?
Thank you