Infra security check tools

DKIM/DMARC check

1. https://easydmarc.com/tools/dkim-lookup

2. https://dmarcly.com/tools/dkim-record-checker

3. https://mxtoolbox.com/dkim.aspx

SSL ciphers check

Use https://cryptcheck.fr/

SSL certificate registrations

Use https://crt.sh

Security Headers

Use https://securityheaders.com/

TLS versions check

Use https://www.ssllabs.com/ssltest/