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Jan Wildeboer 😷:krulorange:<a href="https://social.wildeboer.net/tags/NerdTalk" class="mention hashtag" rel="nofollow noopener" target="_blank">#NerdTalk</a> Wow. A multi-step, sophisticated way of spoofing emails that pass SPF, DKIM, DMARC. Hardcore."And most importantly, the key trick is that you can put anything you want in the App Name field in Google"Le sigh. That's where they put the email text. In the App Name field. Google can fix this by sanitising input better. <a href="https://easydmarc.com/blog/google-spoofed-via-dkim-replay-attack-a-technical-breakdown/" rel="nofollow noopener" translate="no" target="_blank">https://easydmarc.com/blog/google-spoofed-via-dkim-replay-attack-a-technical-breakdown/</a><a href="https://social.wildeboer.net/tags/Spam" class="mention hashtag" rel="nofollow noopener" target="_blank">#Spam</a> <a href="https://social.wildeboer.net/tags/Phishing" class="mention hashtag" rel="nofollow noopener" target="_blank">#Phishing</a> <a href="https://social.wildeboer.net/tags/MailAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#MailAdmin</a>

rixxbecause running a mail server wasn’t fun enough: the Dovecot 2.3 → 2.4 update has tons of breaking config changes(h/t to <a href="https://willem.com/blog/2025-06-04_breaking-changes/" rel="nofollow noopener" translate="no" target="_blank">https://willem.com/blog/2025-06-04_breaking-changes/</a> for the exhaustive breakdown of the changes)<a href="https://chaos.social/tags/mailadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#mailadmin</a> <a href="https://chaos.social/tags/dovecot" class="mention hashtag" rel="nofollow noopener" target="_blank">#dovecot</a> <a href="https://chaos.social/tags/postfix" class="mention hashtag" rel="nofollow noopener" target="_blank">#postfix</a> <a href="https://chaos.social/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a>

Jak2k 🇪🇺For the first time ever, I've got spam.It's from 102.213.93.28 (AfriNIC) and there is no abuse mail in the whois output, only telephone numbers. What should I do? I can DM you the full headers/mail, if it helps.<a href="https://mastodontech.de/tags/spam" class="mention hashtag" rel="tag">#spam</a> <a href="https://mastodontech.de/tags/SpamMails" class="mention hashtag" rel="tag">#SpamMails</a> <a href="https://mastodontech.de/tags/spammail" class="mention hashtag" rel="tag">#spammail</a> <a href="https://mastodontech.de/tags/mailserver" class="mention hashtag" rel="tag">#mailserver</a> <a href="https://mastodontech.de/tags/mailadmin" class="mention hashtag" rel="tag">#mailadmin</a> <a href="https://mastodontech.de/tags/mailadmins" class="mention hashtag" rel="tag">#mailadmins</a> <a href="https://mastodontech.de/tags/afrinic" class="mention hashtag" rel="tag">#afrinic</a> <a href="https://mastodontech.de/tags/whois" class="mention hashtag" rel="tag">#whois</a>

Jonathan Kamens 86 47<a href="https://federate.social/tags/tfw" class="mention hashtag" rel="nofollow noopener" target="_blank">#tfw</a> You have to email a government agency, explain in excruciating detail why your mail server (and any other that enforces <a href="https://federate.social/tags/DMARC" class="mention hashtag" rel="nofollow noopener" target="_blank">#DMARC</a>) can't receive certain emails they're sending that fail their DMARC policy, and then cross your fingers and pray that the tier 1 customer service rep who reads your email forwards it to someone who can fix the problem AND said someone actually takes the time to do it. *sigh* <a href="https://federate.social/tags/smtp" class="mention hashtag" rel="nofollow noopener" target="_blank">#smtp</a> <a href="https://federate.social/tags/SysAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#SysAdmin</a> <a href="https://federate.social/tags/MailAdmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#MailAdmin</a>

TimedIn :verified:IT-Admin: "Why the heck are our emails being marked as spam. I have really no idea!" Recipient: <a href="https://mastodontech.de/tags/email" class="mention hashtag" rel="tag">#email</a> <a href="https://mastodontech.de/tags/emailspam" class="mention hashtag" rel="tag">#emailspam</a> <a href="https://mastodontech.de/tags/spam" class="mention hashtag" rel="tag">#spam</a> <a href="https://mastodontech.de/tags/phishing" class="mention hashtag" rel="tag">#phishing</a> <a href="https://mastodontech.de/tags/spamfilter" class="mention hashtag" rel="tag">#spamfilter</a> <a href="https://mastodontech.de/tags/spamassassin" class="mention hashtag" rel="tag">#spamassassin</a> <a href="https://mastodontech.de/tags/mailadmin" class="mention hashtag" rel="tag">#mailadmin</a> <a href="https://mastodontech.de/tags/emailhosting" class="mention hashtag" rel="tag">#emailhosting</a>

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