* Wietse Venema <[email protected]> [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....
mg
