LuKreme:
> On 12 Aug 2013, at 10:46 , Wietse Venema <[email protected]> wrote:
> > LuKreme:
> >> What exactly does this warning mean?
> >>
> >> mail postfix/smtpd[42297]: warning: valid_hostname: empty hostname
> >
> > It means that something had an empty hostname. You provide too little
> > context to determine what that something was, so I won't speculate.
>
> It looks like it is firing the warning before a connecting that
> identifies itself by IP address.
The warning may be logged among other things while Postfix evaluates
check_*_mx_access, reject_unknown_sender_domain, and other features
that look up hostname information.
Wietse
