On Thu, 26 Nov 2009 18:29:00 +0100 Marco Giardini <m...@tecnogi.com> wrote:
> * Wietse Venema <wie...@porcupine.org> [2009-11-26 12:20:19 -0500]: > > > Marco Giardini: > > > I have a barracuda server that receives mails, filter them and forward > > > to a > > > linux system running postfix. > > > > > > Both machine have a public IP (static). > > > > > > The linux system is configured to be used as SMTP for sasl authenticated > > > users as well, besides to be used as SMTP for the people on $mynetworks > > > (permit_mynetworks in the smtpd_recipient_restrictions). > > > > > > Unfortunatley, some spammers, have found it and use to spam local > > > recipients > > > using the linux machine, avoiding so to be filtered through the barracuda > > > system. > > > > > > I'm wondering if there is a way to allow OLNY local users or users > > > belonging > > > to the domains hosted by the linux server to use SMTP. > > > > To permit only local systems (incl. barracuda box), or users that > > have a relationship with your server: > > > > smtpd_recipient_restrictions = > > permit_mynetworks permit_sasl_authenticated reject > > > > Wietse > > i do use: > smtpd_recipient_restrictions = > permit_mynetworks > permit_sasl_authenticated > reject_unauth_destination > > but it seems from the log that spammer still send me and to other > local users spam mails. > Humm...strange.... Not at all; try reading what Wietse wrote. reject, NOT reject_unauth_destination. > > mg > > > -- John
