I have discovered Friday that the following domain used by Barclays bank in UK doesn't resolve properly - but only on some of my servers running Bind:

federate-secure.glbaa.barclays.com

It works on a server with v9.12.3, but it fails on a server with v9.11.0 and another one with v9.14.2. However, I don't think that the Bind version has anything to do with it. All servers are recursive servers.

It also resolves fine if I point to Google dns servers.

I've ran tests on the domain above using the MX Toolbox dns checker (mxtoolbox.com), and it fails with the following errors:

3  ns22.barclays.net  157.83.102.246  TIMED-OUT  518 ms  , rcode=NO_DATA
3  ns21.barclays.com  157.83.102.245  TIMED-OUT  509 ms  , rcode=NO_DATA
3  ns23.barclays.com  157.83.126.245  TIMED-OUT  504 ms  , rcode=NO_DATA
3  ns24.barclays.net  157.83.126.246  TIMED-OUT  517 ms  , rcode=NO_DATA

I've had to temporarily disable and bypass the local Bind instance on this server and point to Google dns, as users couldn't use online banking from Barclays because of the issue above.

Does anybody have any idea why would it work on some servers and with Google dns, but not on other servers with Bind? Also, would someone mind trying to resolve the above domain at their end and see if they get the same errors please.

Any suggestions appreciated. Thank you.
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