Can reach reddit site from a redirect link in an email

Help
1

I'm trying to open a link in my email which redirects me to a post on the Reddit site.
https://click.redditmail.com/CL0/https:%2F%2Fwww.reddit.com%2Fr%2Ftechsupport%2Fcomments%2Fl6v8pl%2Fwindows_recorder_is_crashing_as_soon_as_i_hit_the%2Fgl2wfos%2F%3F$deep_link=true%26correlation_id=d522f831-f9fb-4120-9100-af4a04754476%26ref=email_comment_reply%26ref_campaign=email_comment_reply%26ref_source=email/3/0100017749028811-7db42c56-f629-4df2-8b47-c33f393065e6-000000/Q-xIqERcZ-lD8_K9ECzsRIJ4HGCHUzm7KcPj6BNj0Ns=178

I'm seeing server not found error.

"Hmm. We’re having trouble finding that site.

We can’t connect to the server at click.redditmail.com."

Jan 28 23:53:18 dnsmasq[7861]: query[A] click.redditmail.com from 192.168.1.3
Jan 28 23:53:18 dnsmasq[7861]: forwarded click.redditmail.com to 127.0.0.1
Jan 28 23:53:18 dnsmasq[7861]: reply click.redditmail.com is <CNAME>

I'm expecting this link to work as this is a legit email/site.
If I disable pihole, then I can get redirected.

I searched for click.redditmail.com in my blocklists and blacklist and I couldn't find it.

Debug Token:

https://tricorder.pi-hole.net/m5fq46p7l1

2

Since this is some sort of tracking (you clicking on a personalized link), I am pretty sure the domain is blacklisted.
You need to whitelist it in case you want to access it using the link.

Legit (whatever the definition is) yes, but including tracking...

3

Thank you.
Whitelisting is solving the problem.

I searched the blacklists I have and this domain doesn't appear there.

1 Like
4

What did the query log show as "Status" and "Reply"?
This domain is a CNAME. Maybe this got blocked?
Did you check neither the domain nor the CNAME are covered by your regex blacklists?

5

This is a CNAME that leads to several other domains, one of which is being blocked. The default behavior of Pi-hole is to block a domain if any of the domains on the CNAME path are blocked.

dig click.redditmail.com
...
;; ANSWER SECTION:

click.redditmail.com. 255 IN CNAME thirdparty.bnc.lt.
thirdparty.bnc.lt. 15 IN A 13.56.31.168
thirdparty.bnc.lt. 15 IN A 52.8.71.76

This CNAME appears on multiple lists:

https://blocklist-tools.developerdan.com/entries/search?q=thirdparty.bnc.lt

Whitelisting the exact original domain will prevent that domain from being blocked even if the CNAME leads to a blocked domain.

1 Like
6

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