Problem experienced with IPFire Recursor mode

[Adolf Belka <adolf.belka@ipfire.org>]

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.