Hi, some nets have set their ptr records to localhost this causes problems to several mailservers i see no problems at mine but just asked to clear
dig -x 123.27.178.4 ; <<>> DiG 9.3.5-P1 <<>> -x 123.27.178.4 ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46689 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 ;; QUESTION SECTION: ;4.178.27.123.in-addr.arpa. IN PTR ;; ANSWER SECTION: 4.178.27.123.in-addr.arpa. 86266 IN PTR localhost. i only get warnings ( like ever ) Aug 6 15:04:31 mxback postfix/smtpd[30131]: warning: 123.27.178.4: address not listed for hostname localhost Aug 6 15:04:31 mxback postfix/smtpd[30131]: connect from unknown[123.27.178.4] is this a hard coded match ( ptrs to localhost are resolved unknown? ) so i.e reject_unknown_reverse_client_hostname will reject it ever ? after all this was warned by german heise pc magazin http://www.heise.de/newsticker/Namens-Trick-oeffnet-Mailserver--/meldung/143123 -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria
