Fourhundred Thecat:
> On 12/11/2019 16.42, Wietse Venema wrote:
> >
> > With this, the Postfix SMTP server will accept mail for non-existent
> > users, the Postfix queue will fill up with bounce messages, and
> > your system will be banned because it sends backscatter email.
> >
> > Instead of deleting the default setting
> > local_recipient_maps = proxy:unix:passwd.byname $alias_maps
> >
> > remove the dependency on the proxymap service.
>
> you mean change to this ?
>
> local_recipient_maps = $alias_maps
You seem to have no idea what proxy:unix:passwd.byname does. It
uses the proxymap service to query the unix:passwd.byname table,
which contains the names of UNIX system accounts (see the postconf
manpage, where it describes the -m option).
If you delete that from local_recipient_maps then the Postfix SMTP
server will not receive email for UNIX system accounts.
Wietse
