An end to spam through Graphnet

Matthew White mtw at
Sat Aug 2 00:50:45 UTC 1997

On Fri, 1 Aug 1997, Geoff White wrote:

> The current problem that I have is valid customers who are "on the road"
> and want to sendmail through my SMTP server when they dial into 
> att or netcom, before their eudora's used to point their SMTP server
> at me, that ain't happenin' after my spam attach so is there some work
> around that they can use?

If your customers always use the same ISP, you could use the "Preventing
Relaying Through Your SMTP Port" ruleset provided at

I have sucsessfully implemented this on our system.  (It's pretty trivial)


Matthew White
Systems Administrator
Channel 1 Communications

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