[xmail] "SmartDNSHost" and "ErrCode = -256"
Hello everyone, I've recently upgraded from Win2k+Xmail 1.25 to RHEL5.5 + Xmail 1.27. This is also on a new hosting provider in a new city. So much has changed. I used to be able to send to this person @ dinglepartners.com.au However now I get error 256. Immediately I assumed there was a DNS issue and did a manual DIG and checked the DNS settings. They all seem fine, so here I pose the question to you all in case I missed something. Below is all the detail I gathered in my checking. It looks like the A-Record is being favoured over the MX, but I know that Davide did some work on the DNS resolver in recent versions to improve the DNS logic. Does anyone have any ideas. Much appreciated. Rob :-) *** SLOG partial * [PeekTime] 1295882102 : Tue, 25 Jan 2011 02:15:02 +1100 << ErrCode = -256 ErrString = Remote DNS server failed SMAIL SMTP-Send EDNS = "dinglepartners.com.au" SMTP = "a.com.au" From = "x...@a.com.au" To = "bb...@dinglepartners.com.au" Failed ! SMTP-Error = "Remote DNS server failed" SMTP-Server = "dinglepartners.com.au" >> *** NDR to sender * [<01>] Error sending message [1295702662847.42261940.6183.9ecb5.c.d.com.au] from [d.com.au]. ID: Mail From: Rcpt To: Server: [202.91.7.245] [<02>] The reason of the delivery failure was: The maximum number of delivery attempts has been reached *** SERVER.TAB dns * "SmartDNSHost" "192.168.11.147:udp;192.168.8.7:udp" *** OS level DNS setting *** (matches SmartDNSHost) ** # cat /etc/resolv.conf nameserver 192.168.11.147 nameserver 192.168.8.7 *** Manual DNS lookup from server running Xmail * # dig dinglepartners.com.au ;; ANSWER SECTION: dinglepartners.com.au. 86400 IN A 202.91.7.245 # dig dinglepartners.com.au mx ;; ANSWER SECTION: dinglepartners.com.au. 61140 IN MX 10 cluster8.us.messagelabs.com. dinglepartners.com.au. 61140 IN MX 20 cluster8a.us.messagelabs.com. # dig cluster8.us.messagelabs.com. ;; ANSWER SECTION: cluster8.us.messagelabs.com. 900 IN A 216.82.254.195 cluster8.us.messagelabs.com. 900 IN A 216.82.254.211 cluster8.us.messagelabs.com. 900 IN A 216.82.241.83 cluster8.us.messagelabs.com. 900 IN A 216.82.241.99 cluster8.us.messagelabs.com. 900 IN A 216.82.249.131 cluster8.us.messagelabs.com. 900 IN A 216.82.249.147 # dig cluster8a.us.messagelabs.com. ;; ANSWER SECTION: cluster8a.us.messagelabs.com. 900 INA 195.245.231.196 cluster8a.us.messagelabs.com. 900 INA 216.82.248.44 cluster8a.us.messagelabs.com. 900 INA 216.82.248.45 *** Check of Xmail DNS cache * find /var/MailRoot/dnscache/ -type f | grep messagelabs find /var/MailRoot/dnscache/ -type f | grep dingle find /var/MailRoot/dnscache/ -type f | grep portplus Nothing showed ** ___ xmail mailing list xmail@xmailserver.org http://xmailserver.org/mailman/listinfo/xmail
Re: [xmail] "SmartDNSHost" and "ErrCode = -117"
On Wed, 22 Sep 2010, fcxm...@aquinet.net wrote: > Hello Davide > > Due to too many 'dns zone' with dns servers responding badly, causing normal > xmail dns mx resolver to fail with "no domain or misconfigured dns servers", > and since manual lookups using our internal dns give the good response, I > tried to set SmartDNSHost > > Then, doing so I have some problems sending to some 'sub' domains like the > example bellow : > > ErrCode = -117 > ErrString = DNS recursion not available > SMAIL SMTP-Send EDNS = "MOH.GOV.MY" SMTP = "X" From = "XXX@XXX" To = > "x...@moh.gov.my" Failed ! > SMTP-Error = "DNS recursion not available" > SMTP-Server = "MOH.GOV.MY" > > > SmartDNSHost entry is like this : > "SmartDNSHost""aaa.bbb.ccc.ddd:udp;aaa.bbb.ccc.ddd:tcp" > > The same internal dns server is used as a redirector dns server for our > internal network, and any internal workstation can resolve the mx for this > domain with success > > What can be the cause ? Long delay answer :) When you add something to the SmartDNSHost, XMail believes that is a "friendly" DNS host, which can resolve recursive queries for it. So XMail sets the recursion bit in the DNS query, which the error above show it being rejected by the server. - Davide ___ xmail mailing list xmail@xmailserver.org http://xmailserver.org/mailman/listinfo/xmail
Re: [xmail] Knowing who is failing Auth Logins
On Wed, 19 Jan 2011, Rob Arends wrote: > Hello, > > I’m running xmail 1.27 on RHEL5.5 > > The SMTP logs are showing a single AUTH=EFAIL:TYPE=LOGIN every hour at xx:00 > hours. > > It is coming from the same PC I believe, although IP changes, the ISP and > area indicated by the > rDNS suggests it is the same PC. > > Most mail clients attempt POP3 more than once an hour, so I’m suspicious. > > The logs don’t indicate the username in the login attempt. > > Is there any way to report on the username that is being used in the attempt. > > If nothing else I can contact the user. > > However if it is a low speed dictionary attack, I’d like to be able to > identify that and take > some action. Yeah, I can see that as being useful. Will add to my queue. - Davide ___ xmail mailing list xmail@xmailserver.org http://xmailserver.org/mailman/listinfo/xmail
