Lima Union:
> >> Mar 26 15:56:34 relay1 postfix/smtpd[2021]: warning: 64.191.105.74:
> >> hostname 64-191-105-74.static.hostnoc.net verification failed: Name or
> >> service not known
> >
> > Yes, broken DNS happens. Instead of reject_unknown_client_hostname
> > you could use reject_unknown_reverse_client_hostname which will
> > use the name even if the above checks fail.
> >
> > http://www.postfix.org/postconf.5.html#reject_unknown_client_hostname
> > http://www.postfix.org/postconf.5.html#reject_unknown_reverse_client_hostname
> >
> > Also, your chroot jail is missing files. Please complain to the
> > distributor.
> >
> > Wietse
>
> Wietse, there's something I don't understand. I've commented out the
The error messages will not go away. The error is in someone elses DNS server.
Postfix will not use such hostnames with reject_unknown_client_hostname.
Therefore it is not useful blocking home computers by their name.
Postfix will use such hostnames with reject_unknown_reverse_client_hostname.
Use this for blocking home computers by their name.
In addition, your chroot jail is missing files, and that was breaking
your DNS lookups. That bug is caused by the distrutor, so please
complain there.
Wietse
