On Fri, 30 Aug 2013 15:52:22 -0400 Jean-Sébastien Nicaise <jsnica...@gmail.com> wrote:
> On Fri, Aug 30, 2013 at 3:48 PM, John Peach <post...@johnpeach.com> wrote: > > > On Fri, 30 Aug 2013 15:43:01 -0400 > > Jean-Sébastien Nicaise <jsnica...@gmail.com> wrote: > > > > [snip] > > > > > > I'm hoping for something simple like: user sends an email. Postfix looks > > at > > > MAIL FROM. Is the email address part of $mydomain? if so, relay mail. If > > > not, don't relay mail. > > > > You really, really do NOT want that. Anyone can then spoof your address > > and you are an open relay. > > > > > > > > > -- > > John > > PGP Public Key: 412934AC > > > > How would restricting local users make me an open relay? You are not restricting to local users, but to anyone claiming to be a local user. $mynetworks is the way to restrict to local users, or use authentication. -- John PGP Public Key: 412934AC
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