;; AUTHORITY SECTION: itasca.net. 2D IN NS bullwinkle.itasca.net. itasca.net. 2D IN NS rocky.itasca.net. ;; ADDITIONAL SECTION: bullwinkle.itasca.net. 2D IN A 207.195.213.5 rocky.itasca.net. 2D IN A 207.195.213.6 *blink blink* That netblock sure looks familiar :) When I hear symptoms like this, I immediately think of the WorkAroundBrokenAAAA sendmail option - but these guys appear to be running bind-8 and working correctly, so that probably isn't the issue. Are you running a DNS server on this machine? Do you have a nameserver specified in /etc/resolv.conf? Who's your upstream? What you may want to do is run tcpdump and watch the DNS traffic. See who you are sending the DNS query to, and who is responding back and with what answers. Also, in general, a good DNS test is to just use dig on your local machine and "play computer", like: dig @f.gtld-servers.net itasca.net (returns nameservers for itasca.net) dig @1st-name-server.itasca.net itasca.net mx dig @2nd-name-server.itacsa.net itasca.net mx See if you get the same response from both, and see if both servers return the same NS records in the authority section that came from the root servers (they did when I looked, so if you are able to get responses from both servers, they should be right). This shouldn't be the case here, but I've seen a lot of intermittent DNS problems because the DNS servers for a domain are returning a different set of auth NS servers in the query responses, from those listed in the root, and the different servers are being flakey - typically this is the case of someone updating the root because they decommissioned or renumbered a name server, but didn't change the zone file. On Tue, 26 Oct 2004, Chris Schumann wrote: > Hey all, > > I've got a RH9 box (I know), and am using Pine and Sendmail... most of the > time. There's a set of domains (itasca.net) that I cannot send e-mail to. > > I get messages that DNS has timed out. > > I have root capability on my box, but I suspect my upstream DNS provider > is the real problem. > > Anyone got some tips for me? Where to start investigating? > > Many thanks, > Chris Schumann > > > > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > Help beta test TCLUG's potential new home: http://plone.mn-linux.org > Got pictures for TCLUG? Beta test http://plone.mn-linux.org/gallery > tclug-list at mn-linux.org > https://mailman.real-time.com/mailman/listinfo/tclug-list > _______________________________________________ TCLUG Mailing List - Minneapolis/St. Paul, Minnesota Help beta test TCLUG's potential new home: http://plone.mn-linux.org Got pictures for TCLUG? Beta test http://plone.mn-linux.org/gallery tclug-list at mn-linux.org https://mailman.real-time.com/mailman/listinfo/tclug-list