Postfix header check to reject certain senders

[Gareth]

On Tue, 2007-07-17 at 12:55, Glenn Steen wrote:
> On 17/07/07, Gareth <list-mailscanner at linguaphone.com> wrote:
> > A bit off topic but you are normally a friendly bunch :)
> >
> > I am trying to get postfix () to reject mail from certain senders rather
> > than accept and then delete it in mailscanner.
> >
> > One such mail has the following in the headers:-
> > From: root at adsl.linguaphone.com
> > To: root at adsl.linguaphone.com
> > Subject: adsl.linguaphone.com security run output
> >
> > I have my postfix header checks set to use regexp matching and the file
> > contains :-
> >
> > /^From:.*\@adsl\.linguaphone\,com/                      REJECT Sender
> > address blacklisted.
> > /^Received:/ HOLD
> >
> > The problem is that the mail I am trying to block is not being rejected.
> > All mail is being put in the hold queue and Mailscanner working
> > correctly so header checks are working.
> > Have I done something wrong with the syntax?
> >
> Look at rejecting the _envelope_ sender instead. That From: is
> probably spoofed to high heaven:-).
> 
> Also, this should be done in the access map instead.
> ... Then again, I'm on vacation, so the brain might be sligtly turned
> off (more than usual, that is:-).

ok I added :-
smtpd_client_restrictions = check_client_access hash:/etc/postfix/access

then added the following line to the access file :-
adsl.linguaphone.com                      REJECT Sender address
blacklisted.

I then used postmap and restarted postfix but the mail is still being
accepted. I configured a copy of outlook with that email address for
testing purposes.

Any ideas?