Re: Postfix Double Bounce Handling

On 2012-05-14 2:48 PM, Vin=EDcius Ferr=E3o <[email protected]>=
 wrote:
> But I don't understand what can make my server a backscatter source.
>
> I'm not relaying from outside, and I only accept messages from my
> domain,

*From* your domain? Or destined *for* your domain?

> and only from my aging sendmail+dovecot server, so no relaying from
> outside.

Well, since you haven't proven any of your assertions, we have no way of=20
knowing.

You should be asking this on the postfix list, but we can probably help=20
you here too, if you are willing to listen...

First, we'll need full output of postconf -n...

> What I don't have is what you said: check for local recipients. But
> this is a problem?

If you accept messages to *any* address (including invalid recipients),=20
then that is what is causing the bounce messages.

If you only accept messages for valid recipients, the bounces stop.=20
Simple, no?