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Stumpi im Retroland<p><span class="h-card" translate="no"><a href="https://cultur.social/@marcuwekling" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>marcuwekling</span></a></span> Großartige Idee! Ich bin (eh schon) dabei! 🙃 <a href="https://c64.social/tags/dutgemacht" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dutgemacht</span></a> <a href="https://c64.social/tags/ididit" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ididit</span></a> </p><p>Hier was ich derzeit schon so nutze:</p><p>- Eigener Mailserver <a href="https://c64.social/tags/postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>postfix</span></a> <a href="https://c64.social/tags/clamav" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>clamav</span></a> <a href="https://c64.social/tags/rspamd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rspamd</span></a> <a href="https://c64.social/tags/roundcubemail" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>roundcubemail</span></a> <a href="https://c64.social/tags/dovecot" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dovecot</span></a> <br>- Notebooks auf <a href="https://c64.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Linux</span></a><br>- <a href="https://c64.social/tags/pfsense" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pfsense</span></a> Firewall <br>- <a href="https://c64.social/tags/thunderbird" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>thunderbird</span></a> </p><p>Selber gehostete freie Dienste/Software derzeit:<br>- <a href="https://c64.social/tags/Nextcloud" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Nextcloud</span></a><br>- <a href="https://c64.social/tags/PaperlessNGX" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PaperlessNGX</span></a> <br>- <a href="https://c64.social/tags/Peertube" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Peertube</span></a> <br>- <a href="https://c64.social/tags/HomeAssistant" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HomeAssistant</span></a> <br>- <a href="https://c64.social/tags/Mastodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Mastodon</span></a> <br>- <a href="https://c64.social/tags/Matrix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Matrix</span></a> <br>- <a href="https://c64.social/tags/Wordpress" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Wordpress</span></a> </p><p>Fremdgehostete freie Dienste:<br>- <a href="https://c64.social/tags/pixelfed" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pixelfed</span></a> <br>- <a href="https://c64.social/tags/bigbluebutton" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bigbluebutton</span></a> <br>- <a href="https://c64.social/tags/letsencrypt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>letsencrypt</span></a> </p><p>Leider kann ich meinen Windowsrechner noch nicht loswerden <a href="https://c64.social/tags/gamer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>gamer</span></a> - aber das kommt bestimmt auch noch irgendwann... 🤞</p>
rixx<p>because running a mail server wasn’t fun enough: the Dovecot 2.3 → 2.4 update has tons of breaking config changes</p><p>(h/t to <a href="https://willem.com/blog/2025-06-04_breaking-changes/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">willem.com/blog/2025-06-04_bre</span><span class="invisible">aking-changes/</span></a> for the exhaustive breakdown of the changes)</p><p><a href="https://chaos.social/tags/mailadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mailadmin</span></a> <a href="https://chaos.social/tags/dovecot" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dovecot</span></a> <a href="https://chaos.social/tags/postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>postfix</span></a> <a href="https://chaos.social/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sysadmin</span></a></p>
Brook Miles<p>I have succeeded in configuring both Cyrus IMAP and Postfix to authenticate using an LLDAP server. Please clap.</p><p><a href="https://sunny.garden/tags/CyrusIMAP" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CyrusIMAP</span></a> <a href="https://sunny.garden/tags/Postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Postfix</span></a></p>
kazé<p>I have a <a href="https://mastodon.social/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SysAdmin</span></a> question: is it okay to use a local, loopback-only SMTP server (<a href="https://mastodon.social/tags/mailutils" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mailutils</span></a> + <a href="https://mastodon.social/tags/postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>postfix</span></a>) to allow a local web app to send mails directly? Without any login/passwd?</p><p>This works fine:<br> echo [boty] | mail -s [subject] [dest]</p><p>But I can’t make it work from my app (<a href="https://mastodon.social/tags/ApacheAnswer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ApacheAnswer</span></a>), even though it does have an unauthenticated mode for SMTP. What am I missing?</p>
🆘Bill Cole 🇺🇦<p>Wishful thinking is so powerful. </p><p>The docs for <a href="https://toad.social/tags/Postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Postfix</span></a>'s headers_checks are explicit &amp; clear: it operates on 1 logical header line at a time, preserving no state across lines. There’s no way to combine rules logically operating on 2 different headers. The man page &amp; the BUILTIN_FILTER_README file are clear: it is unfit for general filtering. </p><p>At least monthly someone pops up on the Postfix mailing list asking whether they can combine rules that apply to different header lines.</p>
Brook Miles<p>Against all odds I have configured a test Cyrus IMAP + Postfix server that both sends and receives email. :goose_hacker: </p><p>It's jank as heck, and absolutely not a useful production setup, but it does "work", and only took 3 hours.</p><p><a href="https://sunny.garden/tags/CyrusIMAP" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CyrusIMAP</span></a> <a href="https://sunny.garden/tags/Postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Postfix</span></a></p>
David Chisnall (*Now with 50% more sarcasm!*)<p>Any <a href="https://infosec.exchange/tags/postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>postfix</span></a> users know how to configure <code>smtp_tls_wrappermode = yes</code> for sending via a single relay, but not use it for others? I have things set up to relay via my outbound SMTP server to a few mail servers that all want STARTTLS over port 587, but now I want to add one that wants SMTPS over port 465. If I don't set <code>smtp_tls_wrappermode = yes</code>, it refuses to connect to the new server. If I do set it, it refuses to connect to the existing ones. There are some hints in the documentation that you can use <code>transport_maps</code> in some way, but I can't figure out how.</p>
Rob Carlson :ally: :BLM:<p>Finally gave in and wrote some Postfix rules to route SMTP traffic for *.outlook.com hosted domains (basically any school or government I email) through IPv4 instead of IPv6 to stop being blocked by Spamhaus false positives on "my" shared v6/64. <a href="https://epistolary.org/tags/IPv6" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>IPv6</span></a> <a href="https://epistolary.org/tags/SpamHaus" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SpamHaus</span></a> <a href="https://epistolary.org/tags/Postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Postfix</span></a></p>
Bruce Heerssen<p>Well, this blows. Spamhaus has blocked the entire 2600:3c00::/64 IPv6 range, which includes my email server. That seems a little excessive.</p><p>I found out because I tried to send an email to my employer, and they use Spamhaus. This is a problem for me and I'm not sure what to do. Maybe I can disable IPv6 for sending email. I dunno.</p><p><a href="https://check.spamhaus.org/results/?query=2600:3c00::f03c:94ff:fe85:b6ee" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">check.spamhaus.org/results/?qu</span><span class="invisible">ery=2600:3c00::f03c:94ff:fe85:b6ee</span></a></p><p><a href="https://darkmoon.social/tags/ServerAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ServerAdmin</span></a> <a href="https://darkmoon.social/tags/Postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Postfix</span></a> <a href="https://darkmoon.social/tags/Spam" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Spam</span></a></p>
Bruce Heerssen<p>I finally got my first bit of legitimate spam (is that even a thing?) since installing SpamAssassin on my mail server. SpamAssissin did its job and correctly tagged the message as spam. </p><p>Honestly, when I first set up my mail server, I thought I'd get a lot more spam. Either I've been lucky, or my internet hygiene is pretty okay.</p><p><a href="https://darkmoon.social/tags/SpamAssassin" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SpamAssassin</span></a> <a href="https://darkmoon.social/tags/Spam" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Spam</span></a> <a href="https://darkmoon.social/tags/Postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Postfix</span></a> <a href="https://darkmoon.social/tags/ServerAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ServerAdmin</span></a></p>
Bruce Heerssen<p>Woohoo! I got spamassassin working. Now to wait for some more spam. I never thought that would be something I'd write. 😆 </p><p><a href="https://darkmoon.social/tags/ServerAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ServerAdmin</span></a> <a href="https://darkmoon.social/tags/SpamAssassin" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SpamAssassin</span></a> <a href="https://darkmoon.social/tags/Spam" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Spam</span></a> <a href="https://darkmoon.social/tags/Postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Postfix</span></a></p>
Piiieps & Brummm<p>Just going through the logs of my own mail server (Thanks, <span class="h-card" translate="no"><a href="https://io.mwl.io/@mwl" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>mwl</span></a></span> !) to extend my <a href="https://chaos.social/tags/postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>postfix</span></a> <a href="https://chaos.social/tags/fail2ban" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fail2ban</span></a> <a href="https://chaos.social/tags/regexp" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>regexp</span></a> to ban hosts with too many unsuccesful login attempts. Knowing the user name pattern (example.com only letters, others with at least one dot) I came up with</p><p>'warning: .*\[&lt;HOST&gt;\]: SASL LOGIN authentication failed: .*sasl_username=&lt;F-USER&gt;(?:[^.]*@(?!example\.com)|[^.]*\.[^.]*@(?:example\.com))&lt;/F-USER&gt;'</p><p>This works great.</p>
Bruce Heerssen<p>I recently added email to my mastodon instance, and with that success, I'm ready to finally cut email ties with Google. I bought a new domain name and I'll set that up with postfix/dovecot/etc, then start moving all of my various internet accounts over to it.</p><p>The new domain has a .net TLD instead of the current .com TLD, and that's nice; it's more appropriate since I'm not running a business. Now I'm just waiting for the DNS changes to propagate.</p><p><a href="https://darkmoon.social/tags/email" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>email</span></a> <a href="https://darkmoon.social/tags/serverAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>serverAdmin</span></a> <a href="https://darkmoon.social/tags/Postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Postfix</span></a></p>
Mikael Hansson<p>This weekend's project:<br>Replaced my <a href="https://hachyderm.io/tags/Postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Postfix</span></a> <a href="https://hachyderm.io/tags/MTA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MTA</span></a> <a href="https://hachyderm.io/tags/mailserver" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mailserver</span></a> with a new one. I had been running a <a href="https://hachyderm.io/tags/Ubuntu" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Ubuntu</span></a> based one since 2020, and it didn't deal well with an in-place upgrade.</p><p>New machine set up on <a href="https://hachyderm.io/tags/Debian" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Debian</span></a> 12, with a bunch of tips stolen from <span class="h-card" translate="no"><a href="https://io.mwl.io/@mwl" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>mwl</span></a></span> 's book Run Your Own Mail Server and from <a href="https://workaround.org/ispmail-bookworm/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">workaround.org/ispmail-bookwor</span><span class="invisible">m/</span></a></p>
Santiago<p>Sysadmins del fediverso, que score usan para Spamassassin? <a href="https://mastodon.uy/tags/spam" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>spam</span></a> <a href="https://mastodon.uy/tags/spamassassin" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>spamassassin</span></a> <a href="https://mastodon.uy/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sysadmin</span></a> <a href="https://mastodon.uy/tags/correo" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>correo</span></a> <a href="https://mastodon.uy/tags/email" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>email</span></a> <a href="https://mastodon.uy/tags/postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>postfix</span></a> <a href="https://mastodon.uy/tags/dovecot" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dovecot</span></a></p>
darthvader42<p>Considering to migrate off <a href="https://sueden.social/tags/Google" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Google</span></a> and other US <a href="https://sueden.social/tags/bigtech" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bigtech</span></a> dependencies since they seem to get stuck deep in <a href="https://sueden.social/tags/Trump" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Trump</span></a>|s asshole. What is supposed to be the "gold standard" replacement for self hosting a tiny OSS mail server (own domain, 4 accounts, IMAP + mobile + web client) these days? Long years ago I've used <a href="https://sueden.social/tags/postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>postfix</span></a> + <a href="https://sueden.social/tags/dovecot" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dovecot</span></a>. Is still still the way to go?</p>
Herbert Reiter<p>Are you <a href="https://social.tchncs.de/tags/selfhosting" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>selfhosting</span></a> an <a href="https://social.tchncs.de/tags/email" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>email</span></a> server?</p><p>I just published an updated <a href="https://social.tchncs.de/tags/Docker" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Docker</span></a> image for <a href="https://social.tchncs.de/tags/Postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Postfix</span></a> 3.10.1, based on <a href="https://social.tchncs.de/tags/archlinux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>archlinux</span></a>.</p><p>The email server is fully customizable via Docker mounted volumes for usage on a Virtual Private Server (<a href="https://social.tchncs.de/tags/VPS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>VPS</span></a>). Just use the Docker registry provided by the project. 👇</p><p><a href="https://gitlab.com/moasda/postfix-docker" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">gitlab.com/moasda/postfix-dock</span><span class="invisible">er</span></a></p><p><a href="https://social.tchncs.de/tags/emailserver" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>emailserver</span></a> <a href="https://social.tchncs.de/tags/mailserver" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mailserver</span></a> <a href="https://social.tchncs.de/tags/freesoftware" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>freesoftware</span></a> <a href="https://social.tchncs.de/tags/foss" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>foss</span></a> <a href="https://social.tchncs.de/tags/floss" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>floss</span></a></p>
Riku Voipio<p><span class="h-card" translate="no"><a href="https://io.mwl.io/@mwl" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>mwl</span></a></span> The only major divergence in my setup from <span class="h-card" translate="no"><a href="https://io.mwl.io/@mwl" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>mwl</span></a></span> 's book is using submission server from dovecot instead of postfix. This makes setup simpler (and thus safer?) because I don't need to teach postfix about sasl!</p><p><a href="https://www.tiltedwindmillpress.com/product/ryoms/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">tiltedwindmillpress.com/produc</span><span class="invisible">t/ryoms/</span></a></p><p><a href="https://society.oftrolls.com/tags/selfhosting" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>selfhosting</span></a> <a href="https://society.oftrolls.com/tags/email" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>email</span></a> <a href="https://society.oftrolls.com/tags/dovecot" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dovecot</span></a> <a href="https://society.oftrolls.com/tags/postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>postfix</span></a></p>
pcyx<p>Shout out to <a href="https://c.im/tags/Postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Postfix</span></a> for being the most solid piece of software that just keeps on ticking. I've been self-hosting my own email for 20 years and I can't think of a single time it gave me trouble.</p><p><a href="https://c.im/tags/linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>linux</span></a> <a href="https://c.im/tags/smtp" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>smtp</span></a> <a href="https://c.im/tags/email" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>email</span></a> <a href="https://c.im/tags/selfhosted" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>selfhosted</span></a> <a href="https://c.im/tags/selfhosting" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>selfhosting</span></a></p>
Raven<p>Postfix 3.10 released with support for OpenSSL 3.5 post-quantum cryptography and for the TLSRPT protocol, logging changes</p><p><a href="https://www.postfix.org/announcements/postfix-3.10.0.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">postfix.org/announcements/post</span><span class="invisible">fix-3.10.0.html</span></a></p><p><a href="https://mastodon.bsd.cafe/tags/postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>postfix</span></a> <a href="https://mastodon.bsd.cafe/tags/openssl" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>openssl</span></a> <a href="https://mastodon.bsd.cafe/tags/freesofware" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>freesofware</span></a> <a href="https://mastodon.bsd.cafe/tags/mailserver" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mailserver</span></a></p>