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I'm currently dealing with a little problem that routes back to me simply not having a static IP, as my ISP charges a ridiculous sum for that.

I have a DDNS in place, which works fine. Except, I'm now trying to provide a service under a subdomain.

The current, non-functional, solution is to simply set up a CNAME Record and additionally an SRV Record:

example.example.com       IN CNAME example.com
_example._tcp.example.com IN SRV   Port 1111 example.example.com

It didn't make much sense to me but some users reported having success this way and other prior solutions didn't work nonetheless. But instead, example.example.com is a dead end, while example.com results in example.com:1111.

I'm completely stumped at this point. All I intend to have is a subdomain directing to my actual IP on port 1111. Many thanks in advance for your help.

mforsetti
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GrossKahn
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  • When you added your records, did you try to query them? Like `host -t srv _example._tcp.example.com` and so on. – Nikita Kipriyanov Mar 23 '21 at 15:52
  • Do the clients of the service you're hosting actually utilize SRV records to locate the service in question? This sounds suspiciously like you trying to use SRV records to host a website or other HTTP based service on a non-default port. But web browsers don't understand SRV records and you can't use them to do that. – Ryan Bolger Mar 23 '21 at 19:21
  • @Nikita Kipriyanoc it's a graphical UI, cpanel to be precise. So no. – GrossKahn Mar 24 '21 at 01:07
  • @Ryan Bolger Kind of. And i suspected that too. Although, it's not a webpage or anything, it's part of an API. The federation API to be precise, I'm trying to get a synapse server going. But I have my doubts as it does kinda work apparently according to the federation tester. When typing in the subdomain its a dead end, but typing in my regular op-level domain it actually connects to my server on the intended port. I can't explain why or how, normally that would mean that my other services shouldn't be reachable anymore, but they are, despite the domain currently pointing to this port always – GrossKahn Mar 24 '21 at 01:14
  • I hadn't asked you *how* you added these records. It doesn't matter. I asked you *to check* after you added them. You can use any tool for that, I gave an example how to check with `host` utility from ISC BIND, but there are many others, `nslookup`, `dig` and plenty of online looking glasses in the Internet. And I'll save my option to send you away to CPanel helpdesk to some later time. – Nikita Kipriyanov Mar 24 '21 at 05:42
  • Oh sorry, now i got what you meant. I just checked on websites like dns.pexip.com or dnslookup.online. The results for those turned out negative aswell i'm afraid. – GrossKahn Mar 24 '21 at 18:21

1 Answers1

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I think you’re missing a couple of .s. Try:

example.example.com. IN CNAME example.com.
Mike Scott
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  • I don't believe so, I checked and while the dots were missing, cpanel would just remove them as soon as I hit enter – GrossKahn Mar 23 '21 at 15:50