


The recipient's email address has been misspelled. I’m not going to try again this message has been in the queue too long. Remove the invalid recipient from your email.Ĥ51 Sorry, I wasn’t able to establish an SMTP connection. The recipient is not a valid email address. They need to correct their forwarding settings. This is commonly caused by the receiver having two addresses that forward to each other. The recipient account is forwarding the message in a loop. This message is looping: it already has my Delivered-To line. Typically, these accounts remain permanently disabled, but you can try sending the email again later. The recipient account exists but its ability to receive mail was disabled. Verify the recipient email address was entered correctly. The email address you sent to does not exist. The recipient needs to clear out their inbox or the receiving folder to make room for more email. The recipient's account has reached its storage limit and can't receive email at this time. The email queue is experiencing higher than normal email volume. Select a bounce type to see its errors and solutions:Ĥ21 Server temporarily unavailable. These examples use the domain and its email address - replace these with your own information. When this happens, find your error to understand what happened and how to solve the issue. There are many reasons sent email can come back rejected with a bounce error.
