Re: How to change the NDR hostname

Jason Gauthier wrote:


> > If you are wanting to reject possible spam content, do it
> > pre-postfix-queue. Period.
> >
> > If you accept it, you keep it. No bounce. No notification. Period.
> >
> > Robin has explained in various ways why not to do it, so
> > either take advice or don't.
>
> If I took advice blindly from someone I don't know without asking
> probing questions.. Well, that wouldn't be very smart.

There is a difference between asking further questions about the advice
given, and just ignoring the advice given.


> How do you stop spam pre-postfix-queue? I mean, obviously, I can use
> greylisting, header-checks, RBLs, etc. But *detecting* spam?

A proxy in front of Postfix. ProxSMTP is a prime example.

http://memberwebs.com/nielsen/software/proxsmtp/

If you reject before accepting it via Postfix, the notification isn't
your problem.

Pre-queue filtering does, however, have potential pitfalls, namely timely
processing.


Matt

p.s: Please reply to the list and not directly.