It should look something like this:
2018.11.19 11:53:05 LOG5[main]: stunnel 5.49 on x86-pc-msvc-1500 platform
2018.11.19 11:53:05 LOG5[main]: Compiled/running with OpenSSL 1.0.2p-fips 14 Aug 2018
2018.11.19 11:53:05 LOG5[main]: Threading:WIN32 Sockets:SELECT,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI
2018.11.19 11:53:05 LOG5[main]: Reading configuration from file stunnel.conf
2018.11.19 11:53:05 LOG5[main]: UTF-8 byte order mark detected
2018.11.19 11:53:05 LOG5[main]: FIPS mode disabled
2018.11.19 11:53:05 LOG5[main]: Configuration successful
2018.11.19 11:53:05 LOG5[main]: stunnel 5.49 on x86-pc-msvc-1500 platform
2018.11.19 11:53:05 LOG5[main]: Compiled/running with OpenSSL 1.0.2p-fips 14 Aug 2018
2018.11.19 11:53:05 LOG5[main]: Threading:WIN32 Sockets:SELECT,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI
2018.11.19 11:53:05 LOG5[main]: Reading configuration from file stunnel.conf
2018.11.19 11:53:05 LOG5[main]: UTF-8 byte order mark detected
2018.11.19 11:53:05 LOG5[main]: FIPS mode disabled
2018.11.19 11:53:05 LOG5[main]: Configuration successful