Most cyberattacks begin with a single email. This infographic covers 9 essential email security best practices—from SPF, DKIM, and DMARC to phishing & BEC detection, layered protection, and access controls. A must-save guide for securing enterprise communication.
#EmailSecurity #CyberSecurity #Phishing #BEC #DMARC #SPF #DKIM #InfoSec #ITSecurity
Und dann unterstützt das 🤬😡 MS365 keine Ed25519-Signaturen. Also doch wieder zurück zu RSA …
So, #Microsoft and #Google are the businesses that today, are defining rules for how #emails work: #DKIM, #DMARC, #SPF
On the paper, everything sounds fine.
In practice? They are the first to fail controls.
- Google keeps failing SPF controls
- Microsoft does not validate correctly DKIM records
This is, again, mob behaviour. We need more diversity in email service providers.
Not to mention how too many businesses are currently being hostages of the above, locked in their clouds.
@deepjoy
To be perfectly honest, #Mailcow continues to impress me. There are countless options for fine-tuning; but once installed and the basic settings configured, it does exactly what it's supposed to. Everything else is just a bonus.
#SMTP, #IMAP, #POP, spam filter, #DKIM signature, webmail with S/MIME capability, #CalDAV, #CardDAV, #SIEVE
@deepjoy
Yes, I participated in two projects funded by #NLnet
First, #CAcert (I was on the board from 2012 to 2016, most recently as Vice President). Then, from 2016 until its unfortunate discontinuation in 2022, I worked on the #WPIA project, again as Vice President and also as Managing Director.
I have to say that the email server actually requires the least work of all.
I use the #MailCow Suite @doncow , and a lot of it is already automated, and the individual components work together seamlessly.
My mail server "serves" almost the entire family network, as well as 4 small businesses and a handful of clubs. So, about 10 or 12 "main domains", and around 20 or 25 alias domains.
IP reputation hasn't worried me much either; I've only had one blacklisting issue in the last five years, but the hosting provider resolved it within a few hours. And of course, you have to ensure that #DKIM, #DMARC, #SPF etc. work together correctly. Then it becomes quite easy.
So I'd say things have gotten easier since I started #selfhosting e-Mail years ago. (#mDaemon was my first hosting suite for e-Mail).
Edit: I should also mention that I run an email setup with a primary mail server and a backup mail server.
Some Bits: Nelson's Linkblog
Know All Edge
Rad Web Hosting
frederic
Dentaku (Thomas Renger)
nathanael
Sebastian Zdrojewski
Juergen M. Bruckner