This Article assumes renewal of an existing SSL (Letsencrypt) Certificate with DNS managed by Cloudflare. Renewal steps: 0. Preparation 1.Check Validity of the Certificate: In browser / SSL checker / openssl on host Example: vpn.devops100.net 2. Run the certbot command to renew the SSL Certificate for vpn.devops100.net 4. Check the TXT via Google Toolbox 5. … Read more
Cloudflare does not proxy traffic on port 25 (SMTP) unless Cloudflare Spectrum is enabled and configured to proxy email traffic across Cloudflare. If you do not have Spectrum enabled, then no email traffic (SMTP) will actually pass through Cloudflare, and we will simply resolve the DNS. This also means that any DNS record used to send email … Read more
After creating a DNS domain (+ Records) in Cloudflare you can have issues getting to your websites because the SSL/TLS settings are not correct In most cases it can be solved by choosing ‘Full (strict) encryption’ in the SSL/TLS menu ! LINK