Writing Exchange

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tech<a href="https://unfufadoo.net/tags/tech" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tech</a> <a href="https://unfufadoo.net/tags/infosec" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#infosec</a> <a href="https://unfufadoo.net/tags/photos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photos</a> <a href="https://unfufadoo.net/tags/images" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#images</a> <a href="https://unfufadoo.net/tags/funny" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#funny</a> <a href="https://unfufadoo.net/tags/heldesk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#heldesk</a> <a href="https://unfufadoo.net/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a> <a href="https://unfufadoo.net/tags/memes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#memes</a> <a href="https://unfufadoo.net/tags/cloud" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cloud</a>

Jan SchaumannSystem AdministrationWeek 8, The Simple Mail Transfer Protocol, Part IIIIn this video, we look at ways to combat Spam. In the process, we learn about email headers, the Sender Policy Framework (<a href="https://mstdn.social/tags/SPF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SPF</a>), DomainKeys Identified Mail (<a href="https://mstdn.social/tags/DKIM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DKIM</a>), and Domain-based Message Authentication, Reporting and Conformance (<a href="https://mstdn.social/tags/DMARC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DMARC</a>). <a href="https://mstdn.social/tags/SMTP" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SMTP</a> doesn't seem quite so simple any more...<a href="https://youtu.be/KwCmv3GHGfc" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://youtu.be/KwCmv3GHGfc</a><a href="https://mstdn.social/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SysAdmin</a> <a href="https://mstdn.social/tags/SRE" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SRE</a> <a href="https://mstdn.social/tags/DevOps" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DevOps</a>

Jérémy LecourIntéressante technique pour l’authentification <a href="https://mastodon.evolix.org/tags/SSH" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SSH</a> basée sur des clés récupérées dynamiquement : <a href="https://jpmens.net/2025/03/25/authorizedkeyscommand-in-sshd/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://jpmens.net/2025/03/25/authorizedkeyscommand-in-sshd/</a> <a href="https://mastodon.evolix.org/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a>

Jan SchaumannSystem AdministrationWeek 8, The Simple Mail Transfer Protocol, Part IIIn this video, we observe the incoming mail on our MTA, look at how STARTTLS can help protect information in transit, how MTA-STS can help defeat a MitM performing a STARTTLS-stripping attack, and how DANE can be used to verify the authenticity of the mail server's certificate.<a href="https://youtu.be/RgEiAOKv640" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://youtu.be/RgEiAOKv640</a><a href="https://mstdn.social/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SysAdmin</a> <a href="https://mstdn.social/tags/SRE" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SRE</a> <a href="https://mstdn.social/tags/DevOps" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DevOps</a> <a href="https://mstdn.social/tags/smtp" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#smtp</a> <a href="https://mstdn.social/tags/tls" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tls</a>

tech<a href="https://unfufadoo.net/tags/tech" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tech</a> <a href="https://unfufadoo.net/tags/funny" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#funny</a> <a href="https://unfufadoo.net/tags/photos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photos</a> <a href="https://unfufadoo.net/tags/heldesk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#heldesk</a> <a href="https://unfufadoo.net/tags/cloud" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cloud</a> <a href="https://unfufadoo.net/tags/infosec" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#infosec</a> <a href="https://unfufadoo.net/tags/images" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#images</a> <a href="https://unfufadoo.net/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a> <a href="https://unfufadoo.net/tags/memes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#memes</a>

tech<a href="https://unfufadoo.net/tags/tech" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tech</a> <a href="https://unfufadoo.net/tags/cloud" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cloud</a> <a href="https://unfufadoo.net/tags/memes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#memes</a> <a href="https://unfufadoo.net/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a> <a href="https://unfufadoo.net/tags/funny" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#funny</a> <a href="https://unfufadoo.net/tags/heldesk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#heldesk</a> <a href="https://unfufadoo.net/tags/infosec" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#infosec</a> <a href="https://unfufadoo.net/tags/photos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photos</a> <a href="https://unfufadoo.net/tags/images" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#images</a>

Mike ElyMe merging a PR at ten till five on a Friday <a href="https://social.taupehat.com/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a>

Larvitz :fedora: :redhat:Pre-Weekend Server maintanance:- Patched all Proxmox VE Servers to 8.3.5 and latest OS updates - Patched burningboard.net Mastodon instance to latest os updates - Patched all my RHEL systems to latest state and rebooted them - Updated my Home-Server and Home-Assistant to version 2025.3.4 - Updated Red Hat Satellite to version 6.16.3 - Decomissioned last Fedora server and removed Fedora 41 repositories from Satellite. - Verified status of my Backup infrastructure and that all servers are backed up properly - Checked monitoring (check_mk and Grafana/Loki) for errorsAll done, weekend can come :-) <a href="https://burningboard.net/tags/linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#linux</a> <a href="https://burningboard.net/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a> <a href="https://burningboard.net/tags/devops" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#devops</a> <a href="https://burningboard.net/tags/linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#linux</a> <a href="https://burningboard.net/tags/rhel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rhel</a> <a href="https://burningboard.net/tags/fedora" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#fedora</a> <a href="https://burningboard.net/tags/proxmox" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#proxmox</a>

Buttered JortsHey Mastodon, question for my <a href="https://infosec.exchange/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a> and <a href="https://infosec.exchange/tags/DevOps" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DevOps</a> types. Has anyone used <a href="https://infosec.exchange/tags/Pester" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Pester</a> and <a href="https://infosec.exchange/tags/PSScriptAnalyzer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PSScriptAnalyzer</a> to set up unit testing for test driven development, particularly on (relatively) simple scripts like you might use for application detection, installation, and uninstallation from a system like <a href="https://infosec.exchange/tags/SCCM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SCCM</a> <a href="https://infosec.exchange/tags/Intune" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Intune</a> or <a href="https://infosec.exchange/tags/ManageEngine" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ManageEngine</a> ?Apologies for the buzzword bingo, but I’m trying to reach folks who may be following the hashtags, but not necessarily have a connection otherwise.<a href="https://infosec.exchange/tags/TDD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TDD</a> <a href="https://infosec.exchange/tags/unittests" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#unittests</a>

Stefano MarinelliThis is one of those post-migration mornings when you wait for the phone to ring because someone might have had/have a problem, but you hope it doesn't ring because that would mean no one has had any issues. So far, everything is fine. 🤞 <a href="https://mastodon.bsd.cafe/tags/IT" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IT</a> <a href="https://mastodon.bsd.cafe/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SysAdmin</a>

JimmyChezPantsHey <a href="https://growers.social/tags/Linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Linux</a> newbsYou're probably spending a lot of time beating your head against stubborn errors that just won't go away, and feeling very down and frustrated about it. Statistically speaking, based on my own experience becoming "expert" at this, you're probably feeling this way a lot of the time, and that is not for no reason.You're probably also wondering when you no longer will have to spend hours hitting yourself in the head with a hammer. How many years of this intense pain will it require?Well, I'm here to assure you, it never ends. You never stop having this happen. I just spent an hour fighting a samba share to let me write to the shared drive. I did everything friggin right. It was just like the first time I tried to do this. I even did everything "correctly" this time, created a special user for the credentials, made sure it had group writing access by joining it to my user's group... still, permission denied every time I try to create a file.So turns out that I added james to the movieUser group, rather than adding the movieUser to the james group. all it needed, an hour ago, was that I put those two words in the correct order in my usermod command.So basically, as you sit there stewing in anger and befuddlement, let this be the moment that you realize that the developers of this chimera are all apes doing whatever they want, and therefore, it is entirely impossible to become an actual "expert" at this, because whatever you take the time to become expert at will be immediately deprecated and moved on from in favour of some other, equivalent drek with whollly different command structures and conventions.Or you'll just flip a group/user assignment and spend an hour beating your head against your own idiocy.Either way, the skill you are actually building up is not technical, but emotional: You are learning to feel this incoherent rage and urge to quit, to let it have its way with you, but to continue working through it and trying new things until it does what you tell it to do, even as you feel this horrific emotional state.That's it, that's the trick to becoming an elite <a href="https://growers.social/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a>. You forego movies and sports events with your friends, you forego watching that movie or show, you eliminate all fun and sunshine from your life, and you spend all the time you can get putting yourself into this rage, until you don't notice the rage anymore.Now you are l33t, and vaguely resemble an angry goblin most of the time. One of us! One of us! One of us!

tech<a href="https://unfufadoo.net/tags/tech" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tech</a> <a href="https://unfufadoo.net/tags/infosec" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#infosec</a> <a href="https://unfufadoo.net/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a> <a href="https://unfufadoo.net/tags/memes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#memes</a> <a href="https://unfufadoo.net/tags/cloud" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cloud</a> <a href="https://unfufadoo.net/tags/photos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photos</a> <a href="https://unfufadoo.net/tags/heldesk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#heldesk</a> <a href="https://unfufadoo.net/tags/images" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#images</a> <a href="https://unfufadoo.net/tags/funny" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#funny</a>

tech<a href="https://unfufadoo.net/tags/tech" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tech</a> <a href="https://unfufadoo.net/tags/memes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#memes</a> <a href="https://unfufadoo.net/tags/heldesk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#heldesk</a> <a href="https://unfufadoo.net/tags/photos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photos</a> <a href="https://unfufadoo.net/tags/images" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#images</a> <a href="https://unfufadoo.net/tags/funny" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#funny</a> <a href="https://unfufadoo.net/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a> <a href="https://unfufadoo.net/tags/cloud" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cloud</a> <a href="https://unfufadoo.net/tags/infosec" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#infosec</a>

old sysopslancement d'une restauration de base de données dans le <a href="https://mamot.fr/tags/train" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#train</a> car c'est la vie de <a href="https://mamot.fr/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a> que j'ai choisie ...

2.5 Admins2.5 Admins 240: 30 DVI CablesThe key differences between throughput and latency – and when they matter, the tech that we’d keep if we stopped working in IT, and avoiding bitrot with rsync backups.<a href="https://2.5admins.com/2-5-admins-240/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://2.5admins.com/2-5-admins-240/</a><a href="https://fosstodon.org/tags/podcast" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#podcast</a> <a href="https://fosstodon.org/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a>

Kyle RankinInteresting cryptic news for anyone who uses atop:<a href="https://www.theregister.com/2025/03/26/uninstall_atop_for_now/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.theregister.com/2025/03/26/uninstall_atop_for_now/</a><a href="https://mastodon.kylerank.in/tags/linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#linux</a> <a href="https://mastodon.kylerank.in/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a> <a href="https://mastodon.kylerank.in/tags/devops" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#devops</a>

Stefano MarinelliAnother round of “hey, your server is down!” drama from the "we need moar kubernetes!" crowd.“I can’t reach your server, it must be down.”I connect. Everything’s fine.A few emails later, I ask to access the container. The dev says he can’t - doesn’t know how. He’s a nice guy, though, so he gives me the credentials.I log in and find the issue: someone pushed a workload to production (cue Kubernetes! Moooaaarrr powaaaarrr! We have the cloud! Who needs sysadmins anymore?!) with DNS set to 192.168.1.1.Of course, it fell to me to investigate, because the dev couldn’t even get a shell inside his container. And it's ok, as he's a dev - and just wants to be a dev.Once I pointed it out, they rebuilt the container with the correct config and - TADA! - everything worked again.Then he went to check other workloads (for other clients, not managed by me) that had been having issues for weeks... Same problem.It was DNS. But it wasn't DNS.<a href="https://mastodon.bsd.cafe/tags/IT" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IT</a> <a href="https://mastodon.bsd.cafe/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SysAdmin</a> <a href="https://mastodon.bsd.cafe/tags/DNS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DNS</a> <a href="https://mastodon.bsd.cafe/tags/Cloud" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Cloud</a> <a href="https://mastodon.bsd.cafe/tags/DevOps" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DevOps</a>

Joaquim HomrighausenIs there any OSS or FOSS e-mail client, for Linux or Windows that has native ActiveSync support (not EWS)? 🤔 🐧 I can't seem to find any, and considering it's been around "for a while", I would have thought there would be some (yes, I'm aware of all the fabulous *DAV variants, thanks).(I mean, there are plenty of e-mail servers that run on Linux, for example, that has server-side support for it.)<a href="https://mastodon.online/tags/activesync" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#activesync</a> <a href="https://mastodon.online/tags/email" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#email</a> <a href="https://mastodon.online/tags/linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#linux</a> <a href="https://mastodon.online/tags/foss" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#foss</a> <a href="https://mastodon.online/tags/oss" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#oss</a> <a href="https://mastodon.online/tags/emailclient" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#emailclient</a> <a href="https://mastodon.online/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a>

hyperrealGrafana, Prometheus, Loki, and Promtail are great. I ran them all locally on my workstation to monitor remote hosts in my homelab and VPS. I tried running Loki and Promtail on one of my VPSes and configured this Loki datasource separately from the local one in the Grafana UI. For some reason the labels from the local one didn't go away, and I couldn't view the labels in the VPS one. I tried to clear the browser cookies for Grafana, to no avail. I'm pretty sure I have the VPS Loki configured correctly. I can query the URL:3100 from my workstation.So I'm thinking of giving Zabbix a try. It would be good to get some experience with Zabbix, anyway.<a href="https://tilde.zone/tags/FOSS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FOSS</a> <a href="https://tilde.zone/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a>

Camelia :tranarchy_a_nonbinary: 🇵🇸Hello everyone! Here's a small <a href="https://tech.lgbt/tags/introduction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#introduction</a> :)I'm Camelia, a <a href="https://tech.lgbt/tags/queer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#queer</a> <a href="https://tech.lgbt/tags/FOSS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FOSS</a> developer and <a href="https://tech.lgbt/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a>. I use she/they pronouns (both are equally fine).I recently got rid of my online pseudonym, which was "Twann" for the last 4 years. Since a name change can be confusing for people who didn't get notified, I thought I'd do a proper introduction again.I'm the main developer of the <a href="https://floss.social/@tblock" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@tblock</a> content blocker, and I recently started self-hosting my Forgejo instance. You can also find my work on Codeberg (link in bio).I also have a website (and a blog), which you can browse at: <a href="https://camelia.dev/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://camelia.dev/</a>I am also the person who initiated a call to open source developers to not share the work of others on GitHub. If you've ever seen a "No GitHub" badge on a project's README, you'll know what I'm talking about. If you don't, feel free to visit: <a href="https://nogithub.codeberg.page/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://nogithub.codeberg.page/</a>I'm looking forward to meeting you all from around the fediverse! :blobfoxheartcute:

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