hogwash might help. I havent used it in a fair while though.

http://www.securityfocus.com/infocus/1208

On 13/04/07, Paolo Supino <[EMAIL PROTECTED]> wrote:
>
> Hi
>
>    I have the following problem: I host a group of windows servers that
> run a webapp using IIS6 ASP technology. The webapp was written and is
> maintained by a small private company that develops custom webapps for
> companies. One of the services the webapp does is send out emails
> (nothing amazing until now). The problem is that the webapp isn't
> written securely. The developers keep saying the webapp is secure and
> isn't the problem. Bringing someone from the outside to prove them wrong
> has failed thus far. Showing logs and showing network access also proved
> futile. the webapp is (ab)used by spammers to relay spam emails which
> caused the webapp's IP address to be added to various spam black lists
> :-( I'm sure it's the ASP is the problem because only HTTP and HTTPS are
> accessible on these servers. The website itself is hidden behind a
> firewall and SMTP port isn't reachable. I'm in the process of replacing
> the current firewall (Microtik's RouterOS, a Linux based OS) with
> OpenBSD and I thought of using spamd to block outgoing spam emails. I've
> started reading about spamd and usage scenarios, but thus far only found
> spamd being used on incoming emails. Did anyone use spamd to block
> outgoing spam emails? Is what I want to do possible (in combination PF)?
> Other solutions will also be appreciated obviously based on OpenBSD :-)
>
>
>
>
>
> TIA
> Paolo

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