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Cake day: July 23rd, 2025

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  • Years ago i was looking for EV kits and found several people out there selling them. Idk what the current availability is, how much tech they have, or how open they are. The ones I saw were pretty low tech (lacking regen braking and such). Think accelerator pedal controls motor speed and a battery pack is about all they were. Again this was a while ago when I was looking (like 2010ish).

    You could offer kits for older vehicles, but considering the cost of the kid and installation cost/effort, does it make sense to start with an older car that may have other issues coming soon?

    So what’s the alternative? Start with a new car and throw out the ICE? Sure, but a bit wasteful and even more expensive than an older car or you could find an existing manufacturer (idk like Lotus) who will basically provide you the car without the ICE related components (aka a glider). ;)


  • Lee@retrolemmy.comtoPrivacy@lemmy.mlSMTP service
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    2 months ago

    Similar to SEO, there’s a lot that isnt public (some for obvious reqsons), so it’s a lot of guess work / trial and error / anecdotes. This volume thing I’m pretty sure is real. What is almost certainly real as well is open rates. If you send a bunch of mail that isn’t opened, this isn’t good either.

    The warming up was in the docs for the 3rd party mail service I managed for work a few years ago when we wanted to switch to a dedicated IP. They also cautioned to keep open rates up. I assume they have the data to advise their customers appropriately.

    I’ve mostly run my own mail servers since around 2000, and I gave up a few years ago and started using a 3rd party for outbound SMTP. I had considered giving people free SMTP accounts to boost legit traffic, but I didn’t know how to prevent spam/scammers from using it. Like if I posted on Reddit that I was doing that, I’d probably get legit people, but also almost certainly a spammer or few. As such, idk how anyone can practically run their own SMTP server today unless they sort of bootstrap it with a few legit newsletters (that people actually want and open) spread out over multiple days or transactional emails like say a ticketing system (if the people receiving them are the types to actually open them).

    As far as personal emails going through the same spam filters, there are some headers newsletters add that I’d assume handles them slightly differently (list-unsubscribe).


  • As long as you do pass through of the USB device (or USB host controller), it should be fine. The VM acesses it directlty without passing through a virtualized version of the device (like what normally happens with sound, network, graphics) and the VM can even DMA to it. Down side is that the hardware isn’t visible to the host anymore, so if you pass through a GPU, it’s used exclusively by the VM, not the host. If you connect a monitor to the GPU, you see the VM, not the host. So you can only do this with hardware that is intended specifically for use within the VM. Zune management sounds like an ideal use case. See IOMMU if you’re interested in some if the tech side if it.



  • No reason it can’t be done on 120v (from a technical level). In fact, most solar inverters in the US could do this at a technical level as they basically do the same thing, just on a larger scale (higher current and therefore are wired in to electrical panels rather than through outlet as outlets have lower current limits). All you need is the inverter to synchronize its AC output to match grid. If you had a smaller inverter, you could just connect it to an outlet (ignoring building codes, insurance, and other non technical reasons). So the choice is then to have centralized larger inverters or smaller inverters per panel or 2. If you live in a very densely populated area where you can only pit a panel or 2 on a balcony or you don’t have control of your electrical panel, then the small inverter method makes sense.


  • I think you’re on to something, but sort of accidentally. A couple replies to you are saying it’s not possible, but I think they’re making an assumption that is not correct in many cases.

    The replies is saying it’s not possible because the layers are flattened before passed to the compression, thus the uncensored/unredacted data is not part of the input to the compression and therefore cannot have any impact on its output. This is true assuming you are starting with an uncompressed image.

    Here’s a scenario where the uncensored/unredacted parts of the image could influence the image: someone takes a photo of their ID, credit card, etc. It’s saved in a lossy compressed format (e.g. JPEG), specifically not a lossless format. They open it in an image editing tool to 100% black out some portion, then save it again (doesn’t actually matter the format). I feel lile someone is going to think I’m misunderstanding if I don’t explain the different output scenarios.

    First is the trivial case: amultilayer output with the uncensored/unredacted data as its own layer. In this case, its trivial to get the uncensored/unredacted data as it is simply present and visible of you use a tool that can show the individual layers, but the general assumption is that this is not the case – that the output is a single layer image, in which we have 2 scenarios.

    Second case: lossy compressed original, lossless censored. Consider that this censored/redacted image is flattened and saved as a lossless format such as PNG. Certainly there will be no compression artifacts of the uncensored/redacted data both because it is lossless (no artifacts added by PNG) and that it was flatted prior to being passed to PNG. However, the uncensored/unredacted artifacts remain in the uncensored/unredacted portions of the image. These were introduced by the compression that was applied prior to the censoring (e.g. the JPEG compression that contained the pre censored image). I suspect this is actually a common case.

    Third case: lossy compressed original, lossy compressed censored: same as second case, except now you have additional artifacts, in particular you bow have artifacts from the censored portion, and the artifacts of the previous lossy compression are also adding additional artifacts. This is probably more difficult, but the point is that the original uncensored/unredacted artifacts are still present.




  • I agree unless the backend server is including it in the response/response headers for some reason, which wouldn’t make a tool like this work in the general case. I thought maybe there was a Cloudflare API that would inadvertently leak the origin IP in an error response in some special case or something of that nature, but I’d assume they would have patched that rather quickly. I’m very curious if this tool ever worked and if so, how.

    If you had a single specific host you were trying to find the origin server for, you could basically scan their ASN and well known data center, particularly the big cloud provider, IPs by sending requests to them with the desired host header to try to find an entry point (load balancer, reverse proxy, web server), but I don’t think that’s practical, particularly with a free API that (presumably) responded in a reasonable amount of time. The underlying API used by the linked script is no longer available, so I don’t know if it worked or response times.

    Furthermore, a well configured system should ignore requests not originating from Cloudflare’s IPs (or use a tunnel) to prevent bypassing Cloudflare, although I’ve seen plenty not do this. Cloudflare even publishes the subnets you should allow. Easy to integrate that in to a cron type job, terraform, or other way to keep rules updated even though they’ve very rarely changed.