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mta-sts

nginx vhost

server {

  listen 80;
  listen 443 ssl;
  http2 on;

  server_name mta-sts.gutocarvalho.net;

  access_log /var/log/nginx/mta-sts.log;
  error_log /var/log/nginx/mta-sts.log;

  ssl_certificate /etc/letsencrypt/live/gutocarvalho.net/fullchain.pem;
  ssl_certificate_key /etc/letsencrypt/live/gutocarvalho.net/privkey.pem;

  include /etc/nginx/ssl.conf;

  client_max_body_size 16m;

  root /opt/www/mta-sts/;
  index index.html index.htm;

  location / {
    try_files $uri $uri/ =404;
  }

}

arquivo mta-sts.txt

/opt/www/mta-sts/.well-known/mta-sts.txt

version: STSv1
mode: enforce
max_age: 604800
mx: mail.gutocarvalho.net

registro de dns

registro txt

_mta-sts

conteúdo

v=STSv1; id=168973349015Z;

refs

MTA-STS

  • https://easydmarc.com/blog/what-is-mta-sts-and-why-do-you-need-it/
  • https://datatracker.ietf.org/doc/html/rfc8461