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We're a Brazilian IT Community. We love IT/DevOps/Cloud, but we also love to talk about life, the universe, and more. | Nós somos uma comunidade de TI Brasileira, gostamos de Dev/DevOps/Cloud e mais!

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#spf

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Marc Tapages 🐰⏚🚲🎺<p><span class="h-card" translate="no"><a href="https://mamot.fr/@bearstech" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>bearstech</span></a></span> <br>trop bien cet outil, j'ai enfin à peu près compris ces mécanismes !<br><a href="https://framapiaf.org/tags/dmarc" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>dmarc</span></a> <a href="https://framapiaf.org/tags/spf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spf</span></a> <a href="https://framapiaf.org/tags/dkim" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>dkim</span></a> <a href="https://framapiaf.org/tags/mail" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mail</span></a> </p><p>Merci pour le partage !</p>
John Goerzen<p><span class="h-card" translate="no"><a href="https://mastodon.social/@jeremiah_" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>jeremiah_</span></a></span> <span class="h-card" translate="no"><a href="https://social.sdf.org/@elb" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>elb</span></a></span> <a href="https://floss.social/tags/NNCPNET" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NNCPNET</span></a>, the new <a href="https://floss.social/tags/NNCP" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NNCP</span></a>-based email network, now has a bidirectional, opt-in, Internet <a href="https://floss.social/tags/email" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>email</span></a> bridge! <a href="https://salsa.debian.org/jgoerzen/docker-nncpnet-mailnode/-/wikis/bridge/intro" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">salsa.debian.org/jgoerzen/dock</span><span class="invisible">er-nncpnet-mailnode/-/wikis/bridge/intro</span></a></p><p>This gates Internet email to/from NNCP. The bridge is off by default. It is a full participant in <a href="https://floss.social/tags/SPF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SPF</span></a>, <a href="https://floss.social/tags/DKIM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DKIM</span></a>, <a href="https://floss.social/tags/DMARC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DMARC</span></a>, and <a href="https://floss.social/tags/TLS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>TLS</span></a> in both directions.</p><p>Yes, now you can get Internet email straight to your <a href="https://floss.social/tags/RaspberryPi" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RaspberryPi</span></a> ! (And even without this, your Pis can email each other!)</p>
Hacker News<p>Spammers are better at SPF, DKIM, and DMARC than everyone else</p><p><a href="https://toad.social/@grumpybozo/114213600922816869" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">toad.social/@grumpybozo/114213</span><span class="invisible">600922816869</span></a></p><p><a href="https://mastodon.social/tags/HackerNews" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HackerNews</span></a> <a href="https://mastodon.social/tags/Spammers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Spammers</span></a> <a href="https://mastodon.social/tags/SPF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SPF</span></a> <a href="https://mastodon.social/tags/DKIM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DKIM</span></a> <a href="https://mastodon.social/tags/DMARC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DMARC</span></a> <a href="https://mastodon.social/tags/cybersecurity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cybersecurity</span></a></p>
jordan<p>Hey <a href="https://mastodon.jordanwages.com/tags/email" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>email</span></a> <a href="https://mastodon.jordanwages.com/tags/nerds" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nerds</span></a> and <a href="https://mastodon.jordanwages.com/tags/ServerAdmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ServerAdmin</span></a> people, I know about <a href="https://mastodon.jordanwages.com/tags/DMARC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DMARC</span></a>, <a href="https://mastodon.jordanwages.com/tags/SPF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SPF</span></a>, and <a href="https://mastodon.jordanwages.com/tags/DKIM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DKIM</span></a> and stuff. BUT.</p><p>Idea: system where email servers generate a <a href="https://mastodon.jordanwages.com/tags/GUID" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GUID</span></a> identifier for that specific email and keep it in a database. Other servers and email clients can then just ping the <a href="https://mastodon.jordanwages.com/tags/domain" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>domain</span></a> that the email says its from and confirm the real domain sent it.</p><p>Like, why couldn't this be a thing? Seems like it would completely stop those <a href="https://mastodon.jordanwages.com/tags/spam" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spam</span></a> emails that pretend to be from <a href="https://mastodon.jordanwages.com/tags/PayPal" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PayPal</span></a> or <a href="https://mastodon.jordanwages.com/tags/banks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>banks</span></a>.</p>
Yes, But ⁉️<p><a href="https://mstdn.social/tags/Scooter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Scooter</span></a> <a href="https://mstdn.social/tags/Scooters" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Scooters</span></a> <a href="https://mstdn.social/tags/HeadGear" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HeadGear</span></a> <a href="https://mstdn.social/tags/SPF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SPF</span></a></p><p><a href="https://mstdn.social/tags/YesBut" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>YesBut</span></a> <a href="https://mstdn.social/tags/Comic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Comic</span></a> <a href="https://mstdn.social/tags/Comics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Comics</span></a> <a href="https://mstdn.social/tags/Meme" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Meme</span></a> <a href="https://mstdn.social/tags/Memes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Memes</span></a></p>
Wulfy<p>I am <a href="https://infosec.exchange/tags/selfhosting" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>selfhosting</span></a> a new <a href="https://infosec.exchange/tags/email" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>email</span></a> engine on a new domain.<br>In preparation for a personal <a href="https://infosec.exchange/tags/Googlemail" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Googlemail</span></a> exodus.</p><p>But even though I have my <a href="https://infosec.exchange/tags/SPF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SPF</span></a> and <a href="https://infosec.exchange/tags/DKIM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DKIM</span></a> record proper<br><a href="https://infosec.exchange/tags/Gmail" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Gmail</span></a> reject the test emails.<br>Without any bounces either, it just black holes them.</p><p>So over this week, I have a small script that randomly email random emails to Gmail to "build reputation".<br>We will see how that goes.</p>
Pixelcode 🇺🇦<p>Setting up <a href="https://social.tchncs.de/tags/SPF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SPF</span></a>, <a href="https://social.tchncs.de/tags/DMARC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DMARC</span></a> and <a href="https://social.tchncs.de/tags/DKIM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DKIM</span></a> is the single most effective way to combat <a href="https://social.tchncs.de/tags/email" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>email</span></a> spam and phishing.</p><p>Own a domain but don't know how to create a DNS record? Not sure what a DNS record even is? No problem, but do ask your IT admin friend. Or google it.</p><p>But by not taking action, you make spammers' lives easier. So do take action.</p><p>QT <span class="h-card" translate="no"><a href="https://hear-me.social/@Jerry" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>Jerry</span></a></span><br><a href="https://hear-me.social/@Jerry/113657096385754371" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hear-me.social/@Jerry/11365709</span><span class="invisible">6385754371</span></a></p>
FredOnline<p>Want email you can feel good about? I use Fastmail for my email. Save 10% on your first year when you sign up with this link: <a href="https://ref.fm/u15257689" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">ref.fm/u15257689</span><span class="invisible"></span></a> <a href="https://fosstodon.org/tags/Fastmail" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Fastmail</span></a> <a href="https://fosstodon.org/tags/email" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>email</span></a> <a href="https://fosstodon.org/tags/spf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spf</span></a> <a href="https://fosstodon.org/tags/dkim" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>dkim</span></a> <a href="https://fosstodon.org/tags/dmarc" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>dmarc</span></a> <a href="https://fosstodon.org/tags/calendar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>calendar</span></a> <a href="https://fosstodon.org/tags/caldav" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>caldav</span></a></p>
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