testssl.sh is a free command line tool which checks a server's service on any port for the support of TLS/SSL ciphers, protocols as well as recent cryptographic flaws and more.

Read more at https://testssl.sh/

yum install git
git clone --depth 1 https://github.com/drwetter/testssl.sh.git
cd testssl.sh/

Here how to test services, please refer to the man for complete commands

* https

  ./testssl.sh 127.0.0.1:443

* httpd-admin

  ./testssl.sh 127.0.0.1:980

* smtp

  ./testssl.sh   -t smtp 127.0.0.1:25
  ./testssl.sh   -t smtp 127.0.0.1:587

* imap and pop3

  ./testssl.sh   -t imap 127.0.0.1:143
  ./testssl.sh   -t pop3 127.0.0.1:110