Hello list recently I setup rDNS rejects for postfix via
> reject_unknown_reverse_client_hostname in smtpd_client_restrictions in main.cf After that I saw in the logs that mails from the ntp mailinglist get rejected > Client host rejected: cannot find your reverse hostname, > [185.140.48.241] I checked their rDNS on the same machine that rejected them and found > 241.48.140.185.in-addr.arpa. 2731 IN CNAME > 241.192/26.48.140.185.in-addr.arpa. > 241.192/26.48.140.185.in-addr.arpa. 931 IN PTR psp3.ntp.org. Is that rDNS bogus so postfix "thinks" it's a unknown/broken rDNS and rejects it? Regards tobi
