SSL Error from Foreman to SmartProxy communication

Problem:
I have setup katello/foreman (1.20) and smartproxy environment. It contains one Foreman and multiple smart proxies server. One of the smart proxy in a restricted environment (DMZ). But this DMZ SmartProxy is giving SSL Error

Expected outcome:
In UI Infrastructure > SmartProxy > Logs, should not contains error message similar to this
OpenSSL::SSL::SSLError: SSL_accept SYSCALL returned=5 errno=0 state=SSLv2/v3 read client hello A
/usr/share/ruby/openssl/ssl.rb:280:in `accept’

Foreman and Proxy versions:
foreman-1.20.3-1.el7.noarch

Foreman and Proxy plugin versions:

Other relevant data:
In UI Infrastructure > SmartProxy > Logs, should not contains error message similar to this
OpenSSL::SSL::SSLError: SSL_accept SYSCALL returned=5 errno=0 state=SSLv2/v3 read client hello A
/usr/share/ruby/openssl/ssl.rb:280:in `accept’

Issue got resolved, After tcpdump analysis. We found out loadbalancer was pinging smart proxy host every 5 secs.