Redirect all dsn to single address?

Mikael Bak mikael at
Tue Jul 12 17:27:15 CEST 2011

Lars Jørgensen wrote:
>> This is not exactly what you asked for, but it solved the backscatter
>> problems for our users:
> That looks interesting, however if I put this in
> smtp      inet  n       -       n       -       -       smtpd
>     -o content_filter=amavisfeed:[]: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 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 But I have
no idea how your configuration is like.

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


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