certbot certonly --standalone --domain mail.00011100.org --csr mail.00011100.org.csr --cert-name mail.00011100.org.crt --must-staple --agree-tos --register-unsafely-without-email --cert-path /var/lib/letsencrypt/mail.00011100.org/mail.00011100.org.crt --fullchain-path /var/lib/letsencrypt/mail.00011100.org/mail.00011100.org_fullchain.pem --chain-path /var/lib/letsencrypt/mail.00011100.org/mail.00011100.org_chain.pem --work-dir /var/lib/letsencrypt/
certbot certonly --standalone -n -d mail.00011100.org systemctl restart