On Mon, 18 Nov 2019 21:08:47 +0100 (CET) Bernardo Reino <rei...@bbmk.org> wrote:
> $ dig -x 81.91.160.182 > office.denic.de. 3600 IN A 81.91.160.182 > > $ dig office.denic.de > office.denic.de. 3508 IN A 81.91.160.182 > > which looks OK. See if your resolver also produces the above results. dig -x 81.91.160.182 182.160.91.81.in-addr.arpa. 14400 IN PTR office.denic.de. dig office.denic.de office.denic.de. 3600 IN A 81.91.160.182 I use unbound. I have stop unbound an use the dns direct with resolv.conf. cat /etc/resolv.conf nameserver 46.182.19.48 nameserver 80.241.218.68 nameserver 2a03:b0c0:0:1010::e9a:3001 nameserver 127.0.0.1 search silviosiefke.com Test mail and result. Nov 19 19:58:20 netcup.silviosiefke.com postfix/smtpd[11593]: NOQUEUE: reject: RCPT from unknown[212.227.15.4]: 450 4.7.25 Client host rejected: cannot find your hostname, [212.227.15.4]; from=<siefke_lis...@web.de> to=<webmas...@silvio-siefke.de> proto=ESMTP helo=<mout.web.de> dig-x 212.227.15.4 4.15.227.212.in-addr.arpa. 14109 IN PTR mout.web.de. dig mout.web.de mout.web.de. 1800 IN A 212.227.15.5 mout.web.de. 1800 IN A 212.227.15.4 mout.web.de. 1800 IN A 212.227.15.14 mout.web.de. 1800 IN A 212.227.17.12 mout.web.de. 1800 IN A 217.72.192.78 mout.web.de. 1800 IN A 212.227.15.6 mout.web.de. 1800 IN A 212.227.17.11 mout.web.de. 1800 IN A 212.227.15.3 Self with direct dns contact it will not work. There is a big mistake. -- Nice Day & Thank you -- Silvio Siefke <siefke_lis...@web.de>
