Securing e-mails

To secure e-mails from my domain and increase deliverability I made sure I had:

an SPF setup : to prevent E-mail spoofing

A DKIM : to authenticate e-mails sent from my domain

A DMARC policy: to validate emails sent from my domain and let the domain that receives them know what to do with emails that do not pass authentication.

I chose to adopt the "reject" policy and created an email box dedicated to receiving DMARC RUA reports. I also specify the interval of the DMARC reports with the "ri" entry (259200 Seconds (72 Hours)). I specified a strict policy on SPF and DKIM authentication to ensure maximum security. My "fo" entry requests a type "1" report which will generate a report if one of the mechanisms (SPF or DKIM) generates any other result than "pass"

My DMARC record:

v=DMARC1;p=reject;pct=100;rua=mailto:dmarc-reports@rebeccaross.tech;ri=259200;aspf=s;adkim=s;fo=1;

last updated: March 7th 2025