On 03/25/2013 01:54 PM, HIDAYAT - ASST. IT MANAGER wrote: > Ada satu kasus dimana email dari dan ke address tertentu sering tertahan di > remote queue untuk waktu yang cukup lama, terlampir adalah log smtp-out nya. > Dari lognya terlihat ada winsock error
> Mon 2013-03-25 09:23:06: [27382:1] * Winsock Error 10054 > Mon 2013-03-25 09:23:06: [27382:1] Error writing to socket > Mon 2013-03-25 09:23:06: [27382:1] Socket connection closed by the other side > (how rude!) > Mon 2013-03-25 09:23:06: [27382:1] * Winsock Error 10053 > Mon 2013-03-25 09:23:06: [27382:1] Connection closed Itu indikasi problem koneksi, bisa karena kualitas koneksi atau satpam eh firewallnya terlalu galak. http://www.altn.com/Support/KnowledgeBase/KnowledgeBaseResults/?Number=KBA-01510 --- Winsock error 10053 usually occurs with routers, firewalls and proxies. Are you using any of these? If you're using a router, please be sure that the MTU setting is at 1500. Then, see if this resolves your issue. If not, double check the MTU setting on the MDaemon server (the MTU setting is in the registry). --- $ ping 136.68.95.1 PING 136.68.95.1 (136.68.95.1) 56(84) bytes of data. ^C --- 136.68.95.1 ping statistics --- 3 packets transmitted, 0 received, 100% packet loss, time 2014ms MTU tidak bisa melakukan adaptasi antara sender dengan receiver karena icmp protocol diblock. http://en.wikipedia.org/wiki/Path_MTU_Discovery --- Path MTU Discovery (PMTUD) is a standardized technique in computer networking for determining the maximum transmission unit (MTU) size on the network path between two Internet Protocol (IP) hosts, usually with the goal of avoiding IP fragmentation. PMTUD was originally intended for routers in Internet Protocol Version 4 (IPv4),[1] however all modern operating systems use it on endpoints. In IPv6 this function has been explicitly delegated to the end points of a communications session.[2] For IPv4 packets, Path MTU Discovery works by setting the Don't Fragment (DF) option bit in the IP headers of outgoing packets. Then, any device along the path whose MTU is smaller than the packet will drop it, and send back an Internet Control Message Protocol (ICMP) Fragmentation Needed (Type 3, Code 4) message containing its MTU, allowing the source host to reduce its Path MTU appropriately. The process is repeated until the MTU is small enough to traverse the entire path without fragmentation. --- -- syafril ------- Syafril Hermansyah MDaemon-L Moderators, running MDaemon 13.5 Beta B SecurityPlus 4.1.5 Harap tidak cc: atau kirim ke private mail untuk masalah MDaemon. -- --[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 13.0.4, SP 4.1.5, BES 2.0.2, OC 2.3.1, SG 2.0.8, PP 2.0.0
