🧠 Vous souhaitez en apprendre plus sur SPF, DKIM, DMARC pour favoriser l’authentification et la délivrabilité de vos e-mails et sécuriser votre courrier électronique ?
📅 Rendez-vous aujourd'hui de 15h à 16h avec Marc van der Wal et Lotfi Benyelles pour un webinaire dédié à ces protocoles !
✅ Inscription obligatoire sur https://webikeo.fr/landing/emails-protocole-dmarc-2025-adoption-erreurs-courantes-configuration/13992
How to Deploy #Mailman Suite on #Debian #VPS for Automated Mailing List Management This article provides a detailed step-by-step guide demonstrating how to deploy Mailman Suite on Debian VPS for automated mailing list management. Mailman Suite includes Mailman Core, #Postorius (web UI), #HyperKitty (archiver), and the Mailman Web UI integration.
What is Mailman Suite?
Mailman Suite ...
Continued 👉 https://blog.radwebhosting.com/deploy-mailman-suite-on-debian-vps/?utm_source=mastodon&utm_medium=social&utm_campaign=mastodon.social #reverseproxy #django #dmarc #dkim #spf #selfhosted #opendkim #selfhosting
Struggling with email deliverability? Fix your email setup today SPF, DKIM, DMARC, and more made easy.
👉 https://boostinbox.com/blog/email-setup-technical-guide
#EmailSetup #EmailMarketing #Deliverability #BoostInbox #SPF #DKIM #DMARC
DMARC is a crucial defence against email spoofing, yet adoption remains low: only about 8% of domains have a valid DMARC record in place. Some top-level domains are making better progress - nearly 40% of .uk domains have implemented DMARC, helping to protect businesses and users from phishing and impersonation attacks 🇬🇧.
#tfw You have to email a government agency, explain in excruciating detail why your mail server (and any other that enforces #DMARC) 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*
#smtp #SysAdmin #MailAdmin
@Catwoman69y2k Currently @monocles doesn't seem to support external domains (not shure if @Stuxhost and/or @nitrokey support that either) but I'd suggest to just ask them.
I merely recommend #monocles because they have god apps and a clear, no-fuss pricing model.
Hardening My Domain Email with SPF, DKIM, DMARC
After spotting spoofed emails from my domain, I finally secured islandinthenet.com with SPF, DKIM, and DMARC.
Someone tried spoofing hear-me.social as an email sender. It was rejected by Yahoo because I set up my #SPF, #DKIM and #DMARC records in my DNS to prevent spoof emails from being delivered. This constantly happens with all my domains.
If you have a domain, please properly protect it from spoofing so people neither get hurt, and you don't lose your domain.
You'd be surprised how many domain owners do not protect their domains properly. A well-known cybersecurity expert, for example, doesn't protect his domain that he uses to send his newsletter, nor specifies that he get reports about it. I'm sure people are freely spoofing his domain. I see bank domains, cloud providers, and ISPs that aren't protecting their domains from spoofing. Bulk senders barely ever protect the sending domains.
And if you have a domain that doesn't send email, and you don't protect, it will send email, but not yours. https://www.gov.uk/guidance/protect-domains-that-dont-send-email
The Google notification I received today tells me that they received an email from Yahoo, claiming to be from hear-me.social, but it failed both the DKIM and SPF checks for hear-me.social and they rejected it.
But, here's the kicker. They only rejected it because I explicitly say to do this in my DNS in my DMARC policy (p=reject). The majority of domain owners don't do this. They either say deliver it anyway to the spam folder (p=quarantine) or deliver it anyway to the inbox (p=none or DMARC missing) which is freaking amazing that they wouldn't make a simple setting to protect you, and themselves.
Protect your domains and be careful with email because it seems most domain owners are not trying to protect you.
Running your own mail server?
Make sure it's secure and trusted. In my latest blog post on OpenTech Pulse, i cover the four essential building blocks:
✅ SPF
✅ DKIM
✅ DMARC
✅ MTA-STS
Learn how to protect your domain from spoofing, phishing, and delivery issues.
#EmailSecurity #SelfHosting #SPF #DKIM #DMARC #MTASTS #OpenTechPuls
https://www.opentechpulse.org/Securing-Your-Self-Hosted-Mail-Server
#tfw you have multiple interviews for an #infosec leadership position at a company, and the hiring manager ends up telling you they really wanted to hire you but couldn't convince the executive team to put the money in the budget, and then months later they add you to their marketing list, and then your #DMARC deployment tries to send them an aggregate report, and it bounces because their RUA inbox is broken, thus proving that they really should have hired you to clean up shit like that.
🧠 Vous souhaitez en apprendre plus sur SPF, DKIM, DMARC pour favoriser l’authentification et la délivrabilité de vos e-mails et sécuriser votre courrier électronique ?
📅 Rendez-vous le 12 juin de 15h à 16h avec Marc van der Wal et Lotfi Benyelles pour un webinaire dédié à ces protocoles !
✅ Inscription obligatoire sur https://webikeo.fr/landing/emails-protocole-dmarc-2025-adoption-erreurs-courantes-configuration/13992
liebes #fediverse, ich brauche einen Tipp:
welche Dienstleistung suche ich, wenn automatisierte Mails, die wir per SMTP von einem Server bei unserem Hoster, grundsätzlich gut funktionieren, aber von einem (leider sehr großen= Mailprovider grundsätzlich abgewiesen werden, und dieser leider auch keine #DMARC-Reports verschickt? Nach was für einer Firma oder Freelancer muss ich da suchen, um Hilfe zu finden? Wie lautet das richtige Stichwort zu meinem Problem?
Security Pattern: Email Spoofing Protection via DMARC, SPF, and DKIM
This post outlines a practical email security pattern using SPF, DKIM, and DMARC to stop spoofing and protect your domain’s reputation.
https://islandinthenet.com/security-pattern-email-spoofing-protection-via-dmarc-spf-and-dkim/
Less than eight percent of top domains implement the toughest DMARC protection #CyberSecurity #Email #DMARC
Die kürzlich veröffentlichte Cyber-Sicherheitsempfehlung "Upgrade für die E-Mail-Sicherheit" ist ein Paradebeispiel für die lösungsorientierte Zusammenarbeit zwischen verschiedenen Abteilungen im BSI. Nur so konnten wir praxisnahe Empfehlungen aussprechen, die auf Beobachtungen der echten Welt da draußen beruhen. Oft können Unternehmen, die E-Mails über eine eigene Domain senden und empfangen, nämlich schon mit überschaubaren Aufwand ihre Sicherheit deutlich verbessern.
#MailSecurity #TeamBSI #SPF #DKIM #DMARC #STARTTLS #DNSSEC #DANE #MTASTS #TLSRPT
How to Deploy #Mailman Suite on #Debian #VPS for Automated Mailing List Management This article provides a detailed step-by-step guide demonstrating how to deploy Mailman Suite on Debian VPS for automated mailing list management. Mailman Suite includes Mailman Core, #Postorius (web UI), #HyperKitty (archiver), and the Mailman Web UI integration.
What is Mailman Suite?
Mailman Suite ...
Continued 👉 https://blog.radwebhosting.com/deploy-mailman-suite-on-debian-vps/?utm_source=mastodon&utm_medium=social&utm_campaign=ReviveOldPost #spf #selfhosted #opendkim #selfhosting #dkim #reverseproxy #django #dmarc
