In my daily report:

The following n subscribers are currently being monitored:

Err First Last  Address
--- ----- ----- -------
  1 08/12 08/12 Zazu Friberg <[log in to unmask]>
                Last error: Mailer mail.podzerone.com said: "553
sorry, that
                            domain isn't in my list of allowed
rcpthosts
                            (#5.7.1)"

Can anyone explain in layman's terms what is happening here?


Thanks,
Christine in Littleton, Massachusetts