this afternoon went i read my maillog in my mail server one of my user received an email coming from ex. "email@example.com" and in my knowlege there no one name... james in my mail account... i try to finger command in my linux box but there no one name james????in my account?? weird
what maybe the possible reason an outsider can email my local user and masquerade as a local user "firstname.lastname@example.org" my domin ex is "xxx.com"
can you try to help me people........... thk!!!