On 2014-10-10 11:18, Benny Kurniawan Candra wrote: > Kami ada problem dibawah ini apakah ada yg salah dari settingan sender > > Fri 2014-10-10 07:11:47: 05: [647464] Accepting SMTP connection from > [111.68.125.253:43905] to [165.108.159.10:25]
> Fri 2014-10-10 07:11:47: 02: [647464] <-- EHLO svr-2014.varnion.net.id > Fri 2014-10-10 07:11:48: 05: [647464] * D=253.125.68.111.IN-ADDR.ARPA > TTL=(179) PTR=[svr-2014.varnion.net.id] > Fri 2014-10-10 07:11:48: 05: [647464] * Gathering A records... > Fri 2014-10-10 07:11:48: 05: [647464] * D=svr-2014.varnion.net.id TTL=(26) > A=[175.176.161.42] Identitas sender server (FQDN host) tidak cocok dengan identitas IP nya, ini istilah teknisnya SMTP Reverse DNS missmatch. Sudah saya buatkan pengecualian dan diupdate ke ftp://ftp.dutaint.com/altn-mdaemon/miscl/ReverseXcpt.dat Tambahan saja Untuk PTR check sebenarnya ada 2 macam 1. Forward-Confirm Reverse DNS. http://en.wikipedia.org/wiki/Forward-confirmed_reverse_DNS http://mxtoolbox.com/problem/smtp/smtp-reverse-dns-resolution --- Forward-confirmed reverse DNS (FCrDNS), also known as full-circle reverse DNS, double-reverse DNS, or iprev, is a networking parameter configuration in which a given IP address has both forward (name-to-address) and reverse (address-to-name) Domain Name System (DNS) entries that match each other. This is the standard configuration expected by the Internet standards supporting many DNS-reliant protocols. RFC 1912 and RFC 1033 (Informational) recommend it as a best practice, but it is not a requirement of standard defining RFCs governing operation of the DNS. --- 2. SMTP Reverse DNS http://mxtoolbox.com/problem/smtp/smtp-reverse-dns-mismatch --- The forward lookup (A) of the hostname hostname did not match the reverse lookup (PTR) for the IP Address. Example of a correctly matching pair of records: (A) lookup for smtp.mxtoolbox.com resolves to 208.123.79.38 (PTR) lookup for 208.123.79.38 reverses to smtp.mxtoolbox.com --- 3. Reverse DNS exist http://en.wikipedia.org/wiki/Reverse_DNS_lookup --- In computer networking, reverse DNS lookup or reverse DNS resolution (rDNS) is the determination of a domain name that is associated with a given IP address using the Domain Name System (DNS) of the Internet. Computer networks use the Domain Name System to determine the IP address associated with a domain name. This process is also known as forward DNS resolution. Reverse DNS lookup is the inverse process, the resolution of an IP address to its designated domain name. ---- -- syafril ------- Syafril Hermansyah MDaemon-L Moderators, running MDaemon 14.5.0 Beta GM1 SP 4.5.0 Beta B Harap tidak cc: atau kirim ke private mail untuk masalah MDaemon. Education is the kindling of a flame, not the filling of a vessel. --- Socrates -- --[MDaemon-L]------------------------------------------------ Milis ini untuk Diskusi antar pengguna MDaemon Mail Server. Netiket: http://www.netmeister.org/news/learn2quote Arsip: http://mdaemon-l.dutaint.com Dokumentasi : http://mdaemon.dutaint.co.id Henti Langgan: Kirim mail ke MDaemon-L-unsubscribe [at] dutaint.com Berlangganan: kirim mail ke MDaemon-L-subscribe [at] dutaint.com Versi terakhir MD 14.0.3, SP 4.1.5, BES 2.0.2, OC 2.3.3, SG 3.0.1
