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APC server rack with threaded holes instead of cage nuts

Just picked up an APC 48u server rack. There were no pictures of it in the post and I did not notice until I got it home and set up, that the rack rails have threaded holes instead of square cage nut holes. I can’t seem to determine the thread size and pitch, and have a thread gauge coming. Until then, does anyone know...

[Abandoned all hope] Trying to self-hosting a mail server, but port 25 is blocked by my ISP

So, I spent the last few days researching and then finally setting up mailcow. I got my domain name, my wildcard certificate, got all the containers up, disabled ipv6 (I don’t have it set up on my home router and am too lazy to set it up tbh), created a domain and an mailbox, etc....

Why is my browser trying to pull content from several other Lemmy instances?

I run a pretty locked down Firefox browser and I noticed when browsing lemmy.world that the browser wants to pull stuff from a long list of other instances, which fails because they aren’t trusted. Is this normal? I thought an instance would collect the things you are subscribed to and store them locally so that you didn’t...

What is your preferred way of downloading youtube videos?

I’m looking to download a number of educational youtube videos for future reference. Looking for a reliable way to download videos. OS is Ubuntu. FF extensions and docker containers all good. I don’t really want to install an executable on bare metal unless it is a flatpak....

When a magazine goes out of print and/or out of business, do the original 'master files' for each issue still exist somewhere?

Thinking about the gaming magazines I used to read as a kid in the ‘90s. Some of them have found their way online thanks to preservationist efforts, but most are seemingly gone forever. (I’m talking about the particular magazine I read as a kid, many others have complete or near-complete collections available online in the...

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