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
BackupPC-users AT lists.sourceforge DOT net
List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki: http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/
|
