Redirect all dsn to single address?

[Mikael Bak]

Lars Jørgensen wrote:
>> This is not exactly what you asked for, but it solved the backscatter
>> problems for our users:
> 
>> http://www.backscatterer.org/
> 
> That looks interesting, however if I put this in master.cf:
> 
> smtp      inet  n       -       n       -       -       smtpd
>     -o content_filter=amavisfeed:[127.0.0.1]:10024
>     -o smtpd_recipient_restrictions=check_sender_access dbm:/etc/postfix/check_backscatterer
> 
> I get this:
> 
> postfix/smtpd[22684]: fatal: parameter "smtpd_recipient_restrictions": specify at least one working instance of: check_relay_domains, reject_unauth_destination, reject, defer or defer_if_permit
> 
> It seems I am missing something? I know this question probably belong to the backscatterer.org people, but as you know of it, maybe you can be of assistance.
> 
> 

Hi Lars,

For me it seems a bit strange to have this on the master.cf. But I have
no idea how your configuration is like.

I have it in my main.cf together with all other restriction classes.

HTH,
Mikael