What version of Splunk are you running? There are some known issues with some versions of Splunk 6.6.x. There are some workaround ideas on this older post:
https://answers.splunk.com/answers/552516/ssl-error-after-upgrading-from-661-to-662.html
What version of Splunk are you running? There are some known issues with some versions of Splunk 6.6.x. There are some workaround ideas on this older post:
https://answers.splunk.com/answers/552516/ssl-error-after-upgrading-from-661-to-662.html