grep filters to block open relay

Ugo Bellavance ugob at
Fri Mar 24 03:52:24 GMT 2006

Stephen Swaney wrote:

> "Sorry, I'm so brain dead that I'll accept email for any address at this
> domain but the user you tried to send email to, Viagra at,
> doesn't have an account on this server so I'm sending you this useless
> message that will sit in my outbound queue for 5 days wasting my resources,
> because the address I'm trying to send to is bogus and won't accept the
> message" 


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