> 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. -- Lars
