Please keep this discussion on-list. I'm not doing personal support for
free. And please don't top-post.

On 2010-01-20 Davy Leon wrote:
> As I said authentication is not the solution. Some of my clients use
> the server to access their real smtp server, and I just relay mail for
> them.

I fail to see how that would prevent you from requiring authentication.

> So, how can I list those valid email addresses I want to relay and
> avoid relaying any other not listed?

Perhaps you could use a cidr_table and a restriction class with a
sender_access map. However, I strongly recommend to *not* go this route
but instead reconsider using authentication.

Regards
Ansgar Wiechers
-- 
"Abstractions save us time working, but they don't save us time learning."
--Joel Spolsky

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