From: Alexander Chiu (Chewy) ("Alexander)
Date: Sun Jun 02 2002 - 23:25:02 EDT
Stavros,
May I ask what sort of things I need to added in the
:/etc/postfix/strict_client_map files?
Is this the example for strict_sender_msg
/etc/postfix/strict_sender_msg:
> >
> > /@([^@]*)$/ 554 use mailserver that handles $1 domain
Do you have any sample configuration?
Regards
Chewy
----- Original Message -----
From: "Stavros Patiniotis" <>
To: "Michael Tokarev" <>
Cc: "Postfix users" <>
Sent: Monday, June 03, 2002 11:06 AM
Subject: Re: Stopping Frequently Forged Domains
>
> Hello,
>
> > Sure. For this, you should change last `reject' to something more
complex.
> > E.g.:
> >
> > []
> > > >strict_client_domain =
> > > > check_client_access hash:/etc/postfix/strict_client_map, reject
> >
> > strict_client_domain =
> > check_client_access hash:/etc/postfix/strict_client_map,
> > check_sender_access regexp:/etc/postfix/strict_sender_msg
> > ^^^^^^
> >
> > /etc/postfix/strict_sender_msg:
> >
> > /./ 554 use mailserver that handles your domain please
> >
> > This way, mail sent from some non-hotmail server with from address in
hotmail
> > domain will be rejected with a message:
> >
> > 554 <>: Sender address rejected: use mailserver that
> > ^^^^^^
> > handles your domain please
> >
> > Or, more funny one:
> >
> > /etc/postfix/strict_sender_msg:
> >
> > /@([^@]*)$/ 554 use mailserver that handles $1 domain
>
>
> Won't this break your mail for the case in which one of your backup relays
> is delivering the mail to you?
>
> Kind Regards,
>
>
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