Post by @dogs0n

In reply to 8 earlier posts

@dogs0n@sh.itjust.works on sh.itjust.works Open parent

Lol the commenter you replied to didnt expect a one of a kind person to reply. Normal people don’t have a ginormous battery and a generator for when the power goes out. Every ISP is dogshit too. If it doesn’t go down from incompetence, it’s their physicial infra being broken from weather or some other “natural event”. Even then, I can’t justify paying their crazy rates for 5g backup year round just for it to kick in once or twice a year or a couple nights where I’m not awake anyways. Every email server that sends mail should have a rety mechanism if it fails to deliver too, so you shouldn’t miss any mail as long as your server isn’t offline for too long. Ofc you are allowed to need 99.99% uptime for your home server, just disagreeing that it’s a need for most of us (including me).

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@ysjet@lemmy.world on lemmy.world Open parent

I mean, my use case is abnormal and generally has more beef behind it than most people would have, yes, but a simpler, cheaper version of what I have set up is kind of a no-brainer if you want to self-host. e.g. I don’t think a simple cyberpower/APC ups on your home server is any kind of a weird ‘specialty’ thing, and it should definitely run your server for 2-3 hours during an outage for like $100-150 if you grab it on sale (which, you know, why wouldn’t you?) As for the generator, I don’t have that for my network stack, I have that for my fridge/deep freeze lol. It can just also recharge my UPS if it’s really that big of a deal. As for cell backup, that’s definitely less a ‘common’ homeserver thing, but I’m only paying like $14/mo for my cell backup connection from tello for 5gb of 5G. Hardly breaking the bank, and honestly probably overkill, you could likely get away with their $10/mo 2gb plan. No complaints with it either, I use them for my regular cell plan too. if you were interesting in self-hosting your own email server and wanted better uptime than 99.9%, you probably don’t even need that if your ISP only sucks slightly instead of mostly, but it allows you to just not care about your ISP having extended downtime.

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@dogs0n@sh.itjust.works on sh.itjust.works Open parent

If you have a regular data plan that you use if your internet goes down, you’re server would technically have an internet connection, but your services (like email) still wouldn’t work would it? Do you have some type of setup that keeps that working on data? I don’t know how buying the ISPs data addon works, but I’ve been skeptical that that swap over would keep anything online either (but getting a generic data plan surely cant work at all right?).

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@ysjet@lemmy.world on lemmy.world Open parent

So this sort of a setup is called Dual-WAN, and yes, it allows it all to work. Basically, my router has two connections to the internet- a cable modem on one port, which connects to Spectrum, and a cell modem on another port, which has my sim card on it. Both provide internet access simultaneously. My router is then configured to reach the internet via what it decides is the ‘best’ internet. In my case, because my cell connection is metered, I have it configured so that it prefers the spectrum connection, and only falls back to the cell connection if the spectrum connection is losing traffic, and only for as long as that connection is losing traffic. Note that a dedicated cell modem is not necessarily required- some routers have sim card slots themselves, for exactly this reason, and tend to make this sort of configuration very simple to do. I’m personally using a small computer running OPNSense, which is again, probably overkill for the average homelabber, but you don’t need something that complicated. As a result, my server always has access to the internet, and should you configure your firewalls appropriately, the internet will then always have access to your server. There’s some details here and there about IP address caching, dns resolution, and the like which have various solutions from DDNS to an external proxy/loadbalancer/etc, but those are more implementation details.

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@dogs0n@sh.itjust.works on sh.itjust.works Open parent

Oh okay, so it doesn’t work then is what I’m gathering (for email).

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@ysjet@lemmy.world on lemmy.world Open parent

That is, in fact, exactly the opposite of what I just said.

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@dogs0n@sh.itjust.works on sh.itjust.works Open parent

For mail this won’t work. For one, you have to now think about dynamic dns because you have your one static ip and then whatever ip your data backup will rollover onto. This isn’t ideal. Probably going to ruin any trust your domain will have. Second, there is no way you’re getting a reverse PTR record setup to work in this config. So, no, it’s not gonna work. It may work fine if you have random services, but tbh I don’t ever want to use or deal with a ddns service myself.

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@ysjet@lemmy.world on lemmy.world Open parent

You do realize your DNS MX records can point to both IPs, and your primary connection just has a higher priority number, right? This is 2025, dns is outright expected to have multiple IPs behind in varying levels of priority and availability. As for DDNS constantly rolling things, I’ve got, as I said, spectrum residential and my IP address has changed once in half a decade. Finally, I literally mentioned that there were other ways around this, like an external proxy server on a static IP. Throw it on DO or something.

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dogs0n in !lemmyshitpost

@dogs0n@sh.itjust.works · Dec 11

Hm, I’m gonna remain skeptical. Using the random ip you get from mobile data or using dynamic dns feels risky. Maybe that’s because I’m not smart, but the whole trust level is mail thing seems very heuristical and the risk of damaging my domains trust factor doesn’t seem worth it. I’m not skeptical about having two ip addresses, but rather using ones that I don’t have control over (i don’t have the only right to use). I might be wrong on the PTR record thing, seems it might be possible with DDNS providers but not 100% sure.

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