This "catch all" or "nobody" account, will act as a "catch-all" account for any non-specified or misspelled username, as long as the domain name is correct. You will be able to retrieve these messages at the mail account you specify.
If you have Administrative access to your email server, log in under your administrative email account, create the alias 'nobody' and point this to whichever email address you would like.
If you do not have administrative access, contact us using the support button above.