Hi All,

Thought I would communicate about a problem I have been having.

I needed to login to my Insurance web site. I could access all the web pages I 
wanted but when trying to login I always got a 503 not available or a timeout. 
This was happening for the last three days.

I disabled the web proxy, IPS and the IP Blocklists functions but none of it 
made any difference. Also cleared all caches I could find. No difference. All 
other web sites and logins worked fine.

This morning looking through various logs I found the following message.

INFO: Unable to resolve A/AAAA record of queried destination 'auth.opgroen.nl', 
returning ERR...

I was using the Recursor mode with my IPFire DNS but I still had 5 DNS servers 
listed, just not enabled.
I therefore enabled them and immediately I was able to get the login screen to 
display.

I then reverted back to the recursor mode and the login stayed worked. Also 
after waiting 5 minutes. I then cleared the browser cache and the login page 
failed to be found.

I then enabled just one DNS server - recursor01.dns.lightningwirelabs.com - on 
the DNS page and the login page worked again.

Also tested clearing the browser cache and the login page still being shown.

Working now for over 15 minutes. That is compared to not working at all once 
over the last three days trying numerous times.

So there seems to be something about my insurance providers login page that 
doesn't want to work well with the Recursor Mode, although everything else has 
worked fine.

So I now have a selected DNS site and thankfully I am able to access the login 
page again but thought I would let you know what I found.

Regards,

Adolf.


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