Hi,

I've tried replying to an email I've received from an account I know exists. I've been emailing this person for the last 7 weeks.

It comes up as Delivery Status Notification (Failure)

With information that: 

Action: failed

Status: 5.5.0

Diagnostic-Code: smtp; 550-5.1.1 The email account that you tried to reach does not exist.

Can anyone help?

Thanks

Rebecca