Domains spoofs

[Alex Neuman van der Hans]

Doc Schneider wrote:
> Hi gang,
>
> Does anyone know of a .mc that I can add to my sendmail to block folks 
> who send--mostly viruses--appearing to come from my maddoc.net domain?
>
> I'm getting sick and tired of all these viruses acting like "noreply@" 
> and "postmaster@" seemingly coming from my servers.
>
> Thanks!
>
Look for "block bad helo hack" for sendmail (if it's what you use).