David Cottle a écrit :
> 
> I found the issue. It's backscatter mail to real recipient addresses. At
> first I was getting non existent as well but stopped those.
> 

Something (a spam filter?) after postfix returns says: "Invalid
destination status"

You MUST not reject mail after it was accepted by postfix, exceptionally
when the message is spam.

> I have to employ header and body checks.
> 
> Okay my question is I have multiple domains not just one like in the
> code example 'porcupine' given.
> 
> How do I code that?
> 

you are the source of backscatter, not the victim. so you can't block
these bounces with a single postfix.

- configure your spam filter to deliver or quarantine or discard... but
not to reject spam.

- reject inbound mail that helo's as "localhost". use check_helo_access
for that. google or read the Bok of Postfix for more infos.

... etc.


> Do I need to string a ton load of domain names or can you use a wildcard
> to match any domain?
> 
> If I could trouble for a snip of code I can apply it and let you know.
> It's a live server and I don't want to experiment code when I am not
> sure how to write it.
> 
> Thanks again!

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