Clicking through from Reddit's email digest should take me to the associated thread. Both URLs in the CNAME/Redirect path have been whitelisted manually and gravity has been updated.
Actual Behaviour:
Attempting to click through results in me landing on Firefox's (ver. 88.0) "Hmm. We’re having trouble finding that site." page. In Chromium browsers (Brave Version 1.23.75 Chromium: 90.0.4430.93), this manifests as a DNS_PROBE_POSSIBLE error. The query log returns a Blocked (gravity) result when attempting to access the page.
I've tried removing it from the GUI whitelist and adding it via SSH using pihole -w click.redditmail.com and pihole -w thirdparty.bnc.lt and updating gravity immediately after via SSH. I cleared my local Windows DNS cache with ipconfig /flushdns. Still no luck.
Running an nslookup results in a response from the pihole, with the addresses being set to the default interface :: and 0.0.0.0 for IPv6/4 respectively, which is expected if the site is getting blackholed by gravity.
My Pi-hole is being hosted on my QNAP TS-251+ in an Ubuntu 18.04 LTS LXC via QNAP's Container Station, kernel ver 4.14.24-QNAP x86-64. Pi-hole is running ver. 5.3.1, web 5.5, ftl 5.8.1
Maybe I'm just blind but on the web interface I'm not seeing a way to set which groups a specific whitelisted domain is applied to. Or does it just always apply to the first group?