2009/7/12 Keld Jørn Simonsen <k...@dkuug.dk>: > from the /var/log/mail/info file: > > Jul 12 09:12:48 rap postfix/smtpd[6597]: NOQUEUE: reject: RCPT from > unknown[92.45.179.70]: 450 4.7.1 Client host rejected: cannot find your > reverse hostname , [92.45.179.70]; from=<eononagenar...@ajsquare.com> > to=<k...@rap.rap.dk> proto=ESMTP helo=<asy70.asy179.tellcom.com.tr> > > I then used: > host 92.45.179.70 > > Which gave: > > 70.179.45.92.in-addr.arpa domain name pointer asy70.asy179.tellcom.com.tr > > And this means that there is a PTR RR. > > Can it be something about postfix not set up to do reverse name lookups?
Notice how you get a 4xx error code. It may simply be your nameserver did not get an answer quickly enough. If you see no reverse lookups succeeding at all, then it may be your resolv.conf that does something weird. /Ole
