When trying to send emails or receive them, you notice you're not getting a bounce back or error with your mail client. The best thing to do is login to your cPanel account > Email Accounts > Select Roundcube and try sending from the server. If you see a error like the image below, it typically means the mail server queue is full, most likely from someone spamming.
If you come across this issue, please reach out to us so that we can resolve it for you. The issue takes a few minutes to fix and we can resolve it on the spot.