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rDNS, how? (feddit.dk)

submitted 1 year ago by drkt@feddit.dk to c/selfhosted@lemmy.world

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I'm on at least 2 blocklists at this point for the crime of not having reverse DNS set up. I don't know how rDNS works. No amount of reading Wikipedia is helping me understand what I have to do.

I have a domain at a registrar which gives me bog standard DNS.
I have Apache running on my network.
I have PiHole running on my network.

My understanding is that rDNS is not set up at my registrar, but somewhere in my network. What do I do?

Thank you for your time.

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[–] drkt@feddit.dk 1 points 1 year ago (9 children)

Copied this from another comment I made

A number of people can’t route to me at all. My domain is drkt.eu and sits on port 80 and 443 @ 89.150.135.135 and 2a05:f6c7:8039::1337

IPv6 is not big in my country, and I don’t think anyone afflicted has IPv6 so I can’t tell you if this affects both v4 and v6.

It’s not a DNS issue, as the afflicted users can get the correct IPs from nslookup.

Mullvad VPN users are consistently unable to route to me.

One friend can’t route to me from his workplace network. It’s a small network and their admin claims they don’t block anything so it’s a mystery to him as well.

Another friend across town can’t reach my network despite being so close to me hop-wise, but his network is run by wacks and is consequently also quite wack. I can’t confidently say this is the same issue.

I’m not dropping any connections for any reason. My ISP claims they aren’t doing any blocking of domains or IPs.

Traceroutes time out at consistent hops but it’s different per afflicted network. The only recurring name has been costumer.tdc.net

It might not be related, but I can’t route to catbox.moe and their admin says my IPs are not blacklisted in any of their systems.

[–] Shadow@lemmy.ca 1 points 1 year ago (6 children)

Do you have a different firewall/router you can try? Even just plug your PC directly into the modem for now to bypass your router and rule that out.

[–] drkt@feddit.dk 1 points 1 year ago* (last edited 1 year ago) (5 children)

~~Routing to me has been solved, my router was incorrectly dropping pings on WAN because I messed up the firewall configs.~~ The trouble users still can't reach my website.

[–] deprecateddino@lemmy.world 2 points 1 year ago

Any chance your firewall is dropping the packets for some reason?

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