Hi Wietse
Am 16.05.2017 um 20:11 schrieb Wietse Venema: > Good luck debugging this. I expect yiu have a chroot issue. > as usual you are right :-) Had chroot 'y' for several postfix processes in master.cf After setting to 'n' and postfix restart the reverse dns check seems to be working as expected Just have to wait until the next mail from ntp mailinglist to be fully sure. The only thing I do not understand yet is why forward dns resolution worked in same chrooted environment. Also the dnsbl lookups from postscreen always worked in chroot. It was just rdns lookups that made problems Thanks for your lesson in "how dns resolution works" and your patience :-) Regards tobi
