letsencrypt

letsencrypt

Uses the acme.sh utility to validate and install TLS certificates from Let's Encrypt.

. mail-toaster.sh && provision letsencrypt

Sample output

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Limitations

• Firewalls: if a network device is blocking port 80 requests to your server, this step will not work.

Testing TLS configuration

• High Tech Bridge SSL Server Test
• SSL Labs Server Test (https only)
• Cipherli.st
• openssl
  • openssl s_client -connect mail.example.com:587 -starttls smtp -tlsextdebug -status
  • openssl s_client -connect mail.example.com:993 -servername mail.another-example.com