Sergey, Is the build toolchain for the RPM packages using an old version of openssl? I am seeing incompatibility errors when testing with 5.8.1 RPM and openssl-devel from system, or appstream repos. These are the version differences I see in the logs: CRITICAL: tls [tls_init.c:870]: tls_h_mod_init_f(): installed openssl library version is too different from the library the kamailio tls module was compiled with: installed "OpenSSL 3.2.1 30 Jan 2024" (0x30200010), compiled "OpenSSL 3.0.7 1 Nov 2022" (0x30000070).#012 Please make sure a compatible version is used (tls_force_run in kamailio.cfg will override this check) Here is what I see in the system RPMs for openssl on centos9: [root@cent9-v075 ~]# dnf info openssl-devel Last metadata expiration check: 0:03:11 ago on Tue 21 May 2024 08:31:12 PM UTC. Installed Packages Name : openssl-devel Epoch : 1 Version : 3.2.1 Release : 1.el9 Architecture : x86_64 Size : 4.9 M Source : openssl-3.2.1-1.el9.src.rpm Repository : @System Summary : Files for development of applications which will use OpenSSL URL : http://www.openssl.org/ License : ASL 2.0 Description : OpenSSL is a toolkit for supporting cryptography. The openssl-devel : package contains include files needed to develop applications which : support various cryptographic algorithms and protocols. Regards, Tyler Moore Full Stack Software Engineer dOpenSource Office: 888-907-2085, ext: 34 Cell: 248-909-2769 Email: tmoore(a)dopensource.com ​ _______________________________________________ Kamailio (SER) - Development Mailing List To unsubscribe send an email to sr-dev-leave(a)lists.kamailio.org