#email security

Suggested path: follow the posts in the order shown below.

Step 1
SMTP
How SMTP moves mail between servers and where it fits alongside IMAP/POP.
#email security #smtp #transport
Step 2
Email Authentication: SPF, DKIM, and DMARC
In-depth notes on email authentication, spoofing prevention, and policy configuration.
#email security #authentication #spf #dkim #dmarc
Step 3
MTA-STS: Enforcing Secure Mail Delivery
Secure SMTP delivery with strict TLS: what it is, why it exists, how to roll it out.
#email security #delivery-security #mta-sts
Step 4
SMTP TLS Reporting (TLS-RPT)
what TLS-RPT is, why it matters, and the minimal steps to enable it.
#email security #smtp #tls #mta-sts #dane