Xmail have folder dnscache. I think that there is a copy of the MX-recording with your old IP-address.
Vitoshnov Dmitriy > -----Original Message----- > From: xmail-boun...@xmailserver.org [mailto:xmail- > boun...@xmailserver.org] On Behalf Of gilad > Sent: Friday, June 18, 2010 11:38 AM > To: xmail@xmailserver.org > Subject: [xmail] DNS Madness > > Where does xmail get the ip address for a domain name? > > I run my own home xmail server (on pclinuxos) and a forwarding only > named on a home server machine. It uses my personal domain name. > > At work I also run an xmail server (on centos) using my company's > domain > name (different from my personal domain name.) > > Few days ago the IP address for the work server has changed. Now my > home > xmail server can't deliver email an account on the work server. It > seems xmail on the home machine resolves the company's domain name to > its old ip address. I verified this by looking at the outgoing traffic > from that machine. > > However, on the same machine running various dns tools > (host,nslookup,dig) all correctly show the new address for the work > mail > server. Also I can connect to it using telnet. However the mail server > tries to connect to the old address. > > I finally gave up on finding where the problem is and set up an > iptables rule to modify outgoing traffic to the old address to go to > the > new address, and voila the home mail server now connects to the work > mail server and works. > > As a reference the iptables rule on the home mail server machine looks > like this: > > iptables -t nat -A OUTPUT -d <work mail server old ip address> -j DNAT > --to <work mail server new ip address> > > Again, on the home server machine (where the confused xmail server > runs) > dig <workdomain.com> mx > returns correctly return <amil.workdomain.com> and > dig <mail.workdomain.com> > correctly returns the new ip address. > > _______________________________________________ > xmail mailing list > xmail@xmailserver.org > http://xmailserver.org/mailman/listinfo/xmail _______________________________________________ xmail mailing list xmail@xmailserver.org http://xmailserver.org/mailman/listinfo/xmail
