Barclays bank domain unresolvable only on some servers
s.arcus at open-t.co.uk
Sun Jun 16 08:43:15 UTC 2019
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
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 220.127.116.11 TIMED-OUT 518 ms , rcode=NO_DATA
3 ns21.barclays.com 18.104.22.168 TIMED-OUT 509 ms , rcode=NO_DATA
3 ns23.barclays.com 22.214.171.124 TIMED-OUT 504 ms , rcode=NO_DATA
3 ns24.barclays.net 126.96.36.199 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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