@dilyanpalauzov : in recent versions of kamailio this is already included
Yes, but it is unclear, if this is still necessary. That is what I asked: is openssl_mutex_shared needed by your setup.
Do you mean by included, that you have `D_PRELOAD=/usr/local/lib64/kamailio/openssl_mutex_shared/openssl_mutex_shared.so /usr/local/sbin/kamailio -f /usr/local/etc/kamailio/kamailio.cfg`?