Re: [exim] listed at Backscatterer.org

On Fri, 2010-06-25 at 09:50 -0500, Matt wrote:
> > my mail server has been listed at backscatterer.org, and on their site
> > they suggested that i should only send bounces to local users but i dont
> > know how to implement this in exim. recently i found out that some of
> > the ip's i allow relay for are infect and send a lot of mails with fake
> > sender addresses, is their a way in exim that i can allow only senders
> > with local + "accepted" domains to relay mails from my mail server. eg:
> > that i allow a user@??? from <1.2.3.4> to relay through my
> > server but user@??? from <1.2.3.4> not relay or send any
> > mails. this will really help me as now what i normally do is block the
> > smtp for the specific ip sending those spams which affect any legitimate
> > emails. I really need help on this two problems. here is an example from
> > the backscattere website.
> >
> > Backscatterer - Why it is abusive and how to stop your system doing so
> >
> > Email servers should be configured to provide Non-Delivery Reports
> > (bounces) to local users only.
> > Unacceptable email from anywhere else should be rejected.
>
>
> When my email server was getting listed it was due to over quotta
> accounts generating bounces. In the end I wrote perl script that
> creates a list of over quotta email address every 5 minutes and
> rejects at SMTP time rather then creating the bounce.
>
> Matt
>
Is it not possible to have an ACL check for over-quota and reject at
SMTP time? I don't use Quotas myself, so I've not looked into it.