Stephen Atkins:
> On 12/30/2011 3:59 PM, Wietse Venema wrote:
> > Stephen Atkins:
> >> So it turns out my replacement while I was on vacation modified my
> >> main.cf. I went back to an back up I have a few weeks ago and changed
> >> it back. Now I don't have that problem any more. What it came down to
> >> was "check_relay_domains" had been removed for some reason.
> >
> > Use "permit_mynetworks, reject_unauth_destination" instead of
> > "check_relay_domains". I am about to remove "check_relay_domains"
> > from Postfix.
>
> Thanks. I see that in the log file now. I will remove it as
> reject_unauth_destination is also in there.
No, you need to replace the check_relay_domains AT THE BEGINNING
of smtpd_recipient_restrictions by
"permit_mynetworks, reject_unauth_destination" AT THE BEGINNING
of smtpd_recipient_restrictions
otherwise you are at risk of becoming an open relay again.
Wietse
