cybervegan
@cybervegan@lemmy.world
- Comment on Caption this. 1 week ago:
Salmon reversing aid.
- Comment on You definitely won't regret doubling the mass of our atmosphere! 1 week ago:
You’re quite right, Ozone is actually O~3~, I got that wrong. I should have looked it up, but I didn’t, hence the error. I’m so sorry I mislead you - can you forgive me? Ozone is actually very interesting - did you know there is a layer of the upper atmosphere known as The Ozone Layer, and that it has a hole in it? Also, Ozone is sometimes produced by chemical reactions and electrical arcs - it has a distinctive, Ozoney smell. As you also made mistakes, I think we are now even - have you ever considered taking up a career as a Large Language Model?
- Comment on You definitely won't regret doubling the mass of our atmosphere! 1 week ago:
This diagram is wrong on so many levels. Ozone is “charged Oxygen” (O1 rather than the usual O2) so it’s saying you get Ozone out of the Hydrogen side. The bubbles are forming in a place where they can’t get to the output vents, so the accumulating gases would slowly force the water level in the inner chamber down, and thus up through the vents. It’s pretty shit. Is it AI slop?
- Comment on Liverpool parade crash victim refused PIP despite life-changing injuries 2 weeks ago:
That’s fair. I’m thankful for your perspective - food for thought. You’re right I’ve not seen that section of society from that angle, though I have a sibling who went through addiction. They were a “functional addict” and were working throughout, so I’m aware of that angle, at least. That was all decades ago now, though their partner had a relapse after an operation when they were given opiate painkillers. I think you’re being hard on yourself though - and I don’t know your circumstances, so I don’t know how you got into that mess, but although it’s easy for outsiders to frame addiction as a personal failure, I think the circumstances that led to that path are often ignored. I see such problems as a systemic failure, rather than a personal one. I’m glad you got clean of the class A’s, it’s no small achievement, and I hope you’re making progress with the rest - though I understand that Nicotine is perhaps the hardest of all to kick. I do think you have a bit of survivor bias there, though. One thing I’ve learnt recently, is that not everyone has the same abilities to get through - I know you’ve seen chancers, and you managed to get through, but I don’t think it’s true that everybody could have taken your path.
For myself, I’m getting help from the CAB, so we’ll see where that goes. I start 1-to-1 support next week with the local “Autism Hub” which is an entirely new thing to me - I’ve never “been in the system” before, so it’s an “interesting” learning curve. I have ups and downs - the past few days I have been far better, but I keep relapsing due to factors outside of my control - mainly caused by said system. I just need the time and space to recover properly, but I don’t know if I’m going to get it. Purely “mental health” things are something this system seems hell bent on denying, so I’m expecting a continuing struggle. I have no choice but to push on.
- Comment on Need to clean my keyboard 2 weeks ago:
It didn’t quite work like that. They used to arrive boxed in batches. The keyboards were worth about £100 back then - so would be worth a lot more in today’s money - and they were looked after with care whilst in transit. It was the end users (in offices) that put the gunk there.
- Comment on Need to clean my keyboard 2 weeks ago:
Can confirm. Back at the beginning of my IT career (mid 1980’s), I worked as a temp for a computer manufacturer in their refurb repairs department. In those days, kit was so expensive that everything got repaired if it went wrong, and one of my jobs was repairing keyboards - PC keyboards, and dumb terminal ones - and the first part of the process was stripping and cleaning them. There was a lot more room for crumbs and dust back then, too, and man did they get full. Crumbs, staples, paper clips, hair grips, all sorts. I had literal mould growing in some of them. I remember the ones coming in from Italy were the worst for that for some reason.
- Comment on Find Cow 3 weeks ago:
- Comment on 3 weeks ago:
Well, it depends what you call spam, how well known your server is (are your email addresses spread far and wide on the web or only known to a couple of people) but a lot of spam is automated and algorithmic, so most servers will be showered with speculative mail addressed to likely mailboxes - which your server still has to process, if only to bounce the message; if you have antispam measures, your server can just drop the connection when it detects a spammy sender (e.g. from an address on a black or greylist). I’m not currently running any mail servers, but a few years back when I did, I used to get about 80% spam incoming.
- Comment on 3 weeks ago:
The list is immense, and I didn’t want to clutter my post with all the details. So just listing off things that spring to mind (because I don’t know what OP doesn’t know):
- Choosing an MTA - sendmail, postfix, exim, etc. and why you might choose one over the others
- Firewall settings
- Software/package management on your chosen distro
- Learning about DNS:
- Host it - yourself via BIND
- Or via a DNS service provider
- DNS record types
- Domains
- Subdomains
- A records/CNAMEs
- MX records
- Mail authority records - SPF’s
- Mail encryption records - DKIM
- Spam filtering, anti-virus
- Learning how to configure your MTA, which requires learning:
- the configuration file language your MTA uses
- what all the options mean and what they do
- what the bare minimum options are to get up and running
- how to make sure your configuration is secure and won’t be exploitable by bad actors
- how mail really gets delivered
- how to setup secure smtp
- how to set up SPFs
- troubleshooting why GMAIL or Microsoft won’t accept your mail
- troubleshooting why GMAIL or Microsoft have stopped accepting your mail
- dealing with blacklists/greylists when someone sends too many messages, or something that "looks too spammy"
- Mail hosting pitfalls
- Being an open relay
- Rate limiting
- Reputation management
- Vulnerabilities that let a hacker take over your server
- Resource management - disk, memory, processes, queues, etc.
- Downtime when you need to do updates
- Downtime if you change your DNS configuration
I’ve definitely missed some stuff, and each of those things requires knowing other stuff too, so you can see that it’s really a pretty deep subject. This is precisely why not many people self-host email themselves these days - the big guys have made it harder and harder to do so, in the name of eradicating spam, which they themselves are the biggest vectors for.
- Comment on Liverpool parade crash victim refused PIP despite life-changing injuries 3 weeks ago:
I can assure you it’s far from easy to get PIP, as I’m going through the process at the moment. It’s degrading and stressful (which is the thing I’ve been told to avoid) and seems entirely arbitrary. The application process is opaque and assessment is not performed by medical professionals. If someone IS getting PIP, they have jumped through MASSIVE hoops to do so. If you think they’re “cheating” then I challenge you to try to get it yourself. You really seem to have no idea.
I hate your reductive “if they’d just” rhetoric, whether directed at drug use or other “simple to solve” difficulties that are, in practice, far from simple to solve. You see an outward symptom as the root cause, and you also fallaciously assume that even if that IS the root cause, that it’s easy to solve. And before you assume that I’m one of those people “doing drugs all the time”, I’m not.
I started working in 1985, and I’ve worked right up to July last year, when I got ill. Prior to that, I seldom had time off sick - I had less than two weeks off in the past decade.
- Comment on 3 weeks ago:
I’d suggest you start with a simple static web server if you’re looking for a good beginner project. Use something like Nginx, and just set it up on your local network at first, then work out how to harden it, and open it up to the real internet. There’s a lot less to learn for this usage case, and it’s less likely to get you into trouble.
I say that, because, after reading through the thread, it seems you are hoping to find an (educational) use for an old computer. I did Linux and Unix admin professionally for 15 years, for some famous brands. I would NOT recommend setting up a mail server as a first project - it’s complex in ways you will never expect, and will require learning skills and knowledge that are very specific and you literally can’t “start small and build up” because a lot of the things you don’t know yet will get you into big trouble. Essentially, it’s not too hard to set up the server software, and your hardware is certainly capable of running this task, but making it safe and secure IS hard these days - especially with all the encryption and anti-spam setups you have to learn how to do.
