On Dec 19, 2011, at 11:28 AM, Rob Sheldon wrote: > Hi Michael, > > OpenDNS by default returns their own internal server addresses for any > queries that don't resolve to a public IP. They do this so that they can > serve up their own search page (with ads, of course) when someone > mistypes a domain name. This behavior breaks a lot of stuff, including, > in this case, your backups. > > If you have an actual account set up with OpenDNS, I think you can > disable this feature. Otherwise, use Google's public DNS: 8.8.8.8 and > 8.8.4.4, which do not break DNS. > > Hope this helps, > > - R. > > On Dec 19 2011 09:10 am, Michael Conner wrote: >> I run backuppc on about 15 computers and one networked Buffalo drive >> in a small museum. I've had it working well for about a year on an >> old >> computer running Centos 5.6 despite not knowing a great deal about >> Linux and networking, just the IT guy by default. The clients are >> mostly Windows XP, some Vista and Windows 7; also an iMac and a >> Centos >> web server. I've got DeltaCopy running on most of the Windows >> computers and use rsyncd; other windows use smb. >> >> Last week I had occasion to change the DNS servers used by our router >> from those hosted by the network that controls our T1 line to OpenDNS >> when exploring a problem unrelated to backuppc. However, after making >> the change, I saw that a lot of the backups were failing due to slow >> ping times. When I increased the ping wait, they failed with messages >> like: Error connecting to rsync daemon at educationoffice:873: inet >> connect: Connection timed out. The xfer log on the Buffalo said: >> timeout connecting to 67.215.65.132:445, which is related to a >> OpenDNS.The linux and mac clients had no problems; they use rsync for >> xfer method. The one Windows 7 machine, which uses smb, also worked. >> Pings and nmblookups run from the command line in Mac OS 10.6.8 also >> were fine. >> >> I changed the DNS servers back and everything is normal again. >> >> Can someone explain what was going on just for my edification? >> >> Mike >>
Rob, Thanks for the info. What I would also like to know is where DNS at the router level is even involved in the process. Why is DNS involved in backuppc making a connection with most windows clients, and why doesn't it cause a problem for the unix and mac clients? Mike ------------------------------------------------------------------------------ Learn Windows Azure Live! Tuesday, Dec 13, 2011 Microsoft is holding a special Learn Windows Azure training event for developers. It will provide a great way to learn Windows Azure and what it provides. You can attend the event by watching it streamed LIVE online. Learn more at http://p.sf.net/sfu/ms-windowsazure _______________________________________________ BackupPC-users mailing list [email protected] List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
